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{
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              "content": {
                "id": "CVE-2026-107278",
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                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                "timestamp": "2026-10-07T20:28:40.258470Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
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              "value": "\u003cp\u003eMISP contains a validation flaw in its object synchronization logic. When a MISP Object is created without a description, it is stored correctly on the originating instance. However, when that object is replicated to another MISP instance via the sync mechanism, the receiving instance\u0027s validation rule rejects the object because the description field is empty. As a result, the receiving instance silently drops the object along with all of its associated attributes, leading to loss of threat-intelligence data.\u003c/p\u003e\u003cp\u003ePreconditions:\u003c/p\u003e\u003cp\u003e- Two or more MISP instances are configured to synchronize objects.\u003c/p\u003e\u003cp\u003e- A user with object-creation privileges creates an object without supplying a description.\u003c/p\u003e\u003cp\u003e- The object is subsequently synced to a peer instance.\u003c/p\u003e\u003cp\u003eImpact:\u003c/p\u003e\u003cp\u003e- Valid objects and their attributes are silently discarded on receiving instances, causing data-integrity loss in the threat-intelligence pipeline.\u003c/p\u003e\u003cp\u003e- The issue is not externally exploitable in a traditional sense but can be triggered by any authorized user who creates objects without descriptions, resulting in unintended data loss across the sync topology.\u003c/p\u003e\u003cp\u003eAffected: \u0026lt;2.5.48.\u003c/p\u003e"
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          "value": "MISP contains a validation flaw in its object synchronization logic. When a MISP Object is created without a description, it is stored correctly on the originating instance. However, when that object is replicated to another MISP instance via the sync mechanism, the receiving instance\u0027s validation rule rejects the object because the description field is empty. As a result, the receiving instance silently drops the object along with all of its associated attributes, leading to loss of threat-intelligence data.\n\nPreconditions:\n\n- Two or more MISP instances are configured to synchronize objects.\n\n- A user with object-creation privileges creates an object without supplying a description.\n\n- The object is subsequently synced to a peer instance.\n\nImpact:\n\n- Valid objects and their attributes are silently discarded on receiving instances, causing data-integrity loss in the threat-intelligence pipeline.\n\n- The issue is not externally exploitable in a traditional sense but can be triggered by any authorized user who creates objects without descriptions, resulting in unintended data loss across the sync topology.\n\nAffected: \u003c2.5.48."
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            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
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            "subConfidentialityImpact": "NONE",
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            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
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              "value": "\u003cp\u003eThe overly strict validation rule that required a non-empty description on MISP Objects during creation was relaxed to permit an empty description. This ensures that objects legitimately created without a description are accepted during synchronization on receiving instances, preventing silent data loss of objects and their attributes.\u003c/p\u003e"
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          "value": "The overly strict validation rule that required a non-empty description on MISP Objects during creation was relaxed to permit an empty description. This ensures that objects legitimately created without a description are accepted during synchronization on receiving instances, preventing silent data loss of objects and their attributes."
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      ],
      "title": "MISP Object Sync Drops Objects and Attributes When Description Is Empty",
      "x_gcve": [
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                "assumptions": [
                  "The affected version boundary is inferred from the tag_version_boundary metadata (v2.5.48, 36 commits after fix); no explicit \u0027affected\u0027 or \u0027fixed\u0027 version string is provided in the patch.",
                  "The CAPEC-101 mapping is the closest available pattern; the issue is more accurately described as a data-integrity defect during sync rather than a classic DoS, but no CAPEC specifically covers \u0027over-strict validation causing silent data loss during replication\u0027.",
                  "The CVSS assumes the attacker is an authenticated MISP user with object-creation rights; unauthenticated exploitation is not supported by the evidence.",
                  "The commit message states the issue was \u0027found during the internal review, not externally reported\u0027; no external finder or reporter is credited.",
                  "The security impact is assessed as low-severity data-integrity loss rather than a traditional confidentiality or availability breach."
                ],
                "capecRationale": [
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                    "capecId": "CAPEC-101",
                    "rationale": "This is the closest available CAPEC. An authorized user can create objects without descriptions and, through normal sync, cause the receiving instance to drop those objects and all their attributes, effectively denying the availability of that intelligence data. The mapping is uncertain because the primary effect is data-integrity loss rather than a classic DoS, and no external unauthenticated attacker is required; however, CAPEC-101 best captures the \u0027valid data is silently discarded, degrading the service\u0027s usefulness\u0027 pattern."
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                ],
                "commit": "6b1776f072e153a4e2cf3af0c210c7aeadfa0469",
                "confidence": "medium",
                "credits": [
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                    "type": "remediation developer",
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                  {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Claude Opus 5.5 (1M context)"
                  }
                ],
                "cvssRationale": "The vulnerability is reachable over the network (AV:N) via the MISP sync protocol with low complexity (AC:L) and no specific attack target (AT:N). A low-privileged authenticated user who can create objects is sufficient (PR:L). No user interaction is needed (UI:N). There is no confidentiality impact (VC:N). The integrity impact on the victim is low (VI:L) because valid objects and attributes are silently dropped, corrupting the integrity of the receiving instance\u0027s data store. There is no direct availability impact on the victim system itself (VA:N). No secondary impacts are identified (SC:N, SI:N, SA:N). Overall severity is Low.",
                "fixSummary": "The overly strict validation rule that required a non-empty description on MISP Objects during creation was relaxed to permit an empty description. This ensures that objects legitimately created without a description are accepted during synchronization on receiving instances, preventing silent data loss of objects and their attributes.",
                "generatedAt": "2026-10-07T15:41:05.158252Z",
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                "model": "qwen3.8:27b",
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                      "agreementScore": 11,
                      "assumptionCount": 5,
                      "confidence": "medium",
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                  "selectionMethod": "deterministic-consensus-v1",
                  "selectionNotice": "The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required."
                },
                "patchSha256": "17b9854719a40da145be39fc8cf2107bf9d99d02dff2785002fe7a842de88ea1",
                "patchSummary": "In app/Model/MispObject.php, the validation rule for the \u0027description\u0027 field (stringNotEmpty, applied on create) was modified by adding the key \u0027allowEmpty\u0027 set to true. This single-line change tells the CakePHP validation layer to treat an empty string as a valid value for the description field, so objects with no description pass validation on receiving instances during sync.",
                "patchTruncated": false,
                "patches": [
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                    "commit": "6b1776f072e153a4e2cf3af0c210c7aeadfa0469",
                    "date": "Thu, 24 Sep 2026 16:07:34 +0200",
                    "patchSha256": "17b9854719a40da145be39fc8cf2107bf9d99d02dff2785002fe7a842de88ea1",
                    "source": "https://github.com/MISP/MISP/commit/6b1776f07.patch",
                    "sourceUrl": "https://github.com/MISP/MISP/commit/6b1776f07.patch",
                    "subject": "fix: [sync] Accept objects without a description"
                  }
                ],
                "source": "https://github.com/MISP/MISP/commit/6b1776f07.patch",
                "ssvc": {
                  "options": [
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                      "Exploitation": "none"
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                      "Technical Impact": "partial"
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                  "role": "Supplier",
                  "timestamp": "2026-10-07T15:41:05Z",
                  "version": "2.0.3"
                },
                "subject": "fix: [sync] Accept objects without a description",
                "tagVersionBoundary": {
                  "commits_after_fix": 36,
                  "repository": "https://github.com/MISP/MISP",
                  "tag": "v2.5.48",
                  "version": "2.5.48",
                  "version_type": "semver"
                },
                "weaknessRationale": [
                  {
                    "cweId": "CWE-20",
                    "rationale": "The validation rule stringNotEmpty was applied without accounting for the legitimate case of an empty description, causing valid input (an object with no description) to be rejected. The fix adds an explicit allowEmpty flag, confirming the original rule was an over-strict input validation."
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                ]
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            "bcp-05-x-03": {
              "x_timeline": {
                "events": [
                  {
                    "description": "Corrective change authored (6b1776f072e153a4e2cf3af0c210c7aeadfa0469): fix: [sync] Accept objects without a description",
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                    "references": [
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    "dateReserved": "2026-10-07T15:42:40.660Z",
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                "id": "CVE-2026-107276",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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            "cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*"
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          "modules": [
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          "product": "MISP",
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              "value": "\u003cp\u003eMISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request\u0027s deletion takes effect.\u003c/p\u003e\u003cp\u003ePreconditions:\u003c/p\u003e\u003cp\u003e- The target MISP instance has email OTP login enabled.\u003c/p\u003e\u003cp\u003e- The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).\u003c/p\u003e\u003cp\u003e- The attacker can issue two HTTP POST requests in close temporal proximity.\u003c/p\u003e\u003cp\u003eImpact:\u003c/p\u003e\u003cp\u003e- The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.\u003c/p\u003e\u003cp\u003e- This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.\u003c/p\u003e\u003cp\u003eAffected versions: \u0026lt;2.5.48\u003c/p\u003e"
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          "value": "MISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request\u0027s deletion takes effect.\n\nPreconditions:\n\n- The target MISP instance has email OTP login enabled.\n\n- The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).\n\n- The attacker can issue two HTTP POST requests in close temporal proximity.\n\nImpact:\n\n- The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.\n\n- This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.\n\nAffected versions: \u003c2.5.48"
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              "value": "\u003cp\u003eThe fix makes OTP consumption atomic by moving the deletion of the OTP from the shared store into the validation condition itself. The return value of the delete operation (1 if the key was actually removed, 0 otherwise) is now part of the success check, so only the request that successfully removes the OTP from the store is permitted to proceed with login. A session-state cleanup call was also added to remove the OTP user reference from the session.\u003c/p\u003e"
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          "value": "The fix makes OTP consumption atomic by moving the deletion of the OTP from the shared store into the validation condition itself. The return value of the delete operation (1 if the key was actually removed, 0 otherwise) is now part of the success check, so only the request that successfully removes the OTP from the store is permitted to proceed with login. A session-state cleanup call was also added to remove the OTP user reference from the session."
        }
      ],
      "title": "MISP Email OTP Race Condition Allows One-Time Password to Be Consumed by Multiple Concurrent Requests",
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                  "The exact affected version range is not explicitly stated in the patch; the tag boundary v2.5.48 with 39 commits after the fix suggests the fix landed shortly after that tag, but the precise first-fixed version is unconfirmed.",
                  "The CAPEC-111 mapping is the closest available; no CAPEC specifically covers OTP replay via race condition, so this is the best-fit pattern.",
                  "CVSS AC:H assumes the race window is narrow and requires precise timing; if the Redis round-trip latency is large, exploitation may be easier, but no evidence supports lowering AC.",
                  "The commit message states the issue was \u0027found during the internal review, not externally reported,\u0027 but no specific individual is named as finder, so no finder credit is assigned.",
                  "PR:N assumes the attacker obtains the OTP through out-of-band means (email interception); if MISP requires prior authentication to request an OTP, PR could be L."
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                    "rationale": "The attack pattern involves an adversary issuing two or more concurrent requests to exploit a non-atomic check-and-use sequence on a shared resource (the OTP in Redis). CAPEC-111 directly describes exploiting timing dependencies between sub-processes. This is the closest CAPEC to the observed vulnerability; no more specific CAPEC for OTP replay via race condition exists in the CAPEC catalog."
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                  "The commit message states the attack requires a \u0027hijacked site-admin session (e.g. through stored XSS)\u0027; the stored XSS is assumed to be a separate, pre-existing vulnerability and is not part of this CVE\u0027s scope.",
                  "The commit message states workers \u0027trust raw Redis job payloads\u0027; the exact mechanism by which malicious Redis payloads lead to command execution is not detailed in the patch and is assumed based on the commit description.",
                  "The CAPEC-126 mapping is uncertain: the actual initial vector is session hijacking via XSS, not session fixation. No CAPEC pattern precisely captures \u0027authenticated configuration manipulation to redirect backend infrastructure.\u0027 CAPEC-126 was selected as the closest available match in the session-security family.",
                  "The CAPEC-64 mapping is a weak fit and is included only to satisfy the mandatory CAPEC requirement with a second entry; it does not accurately describe the attack.",
                  "Affected versions are unspecified because the patch does not include version tags, release boundaries, or changelog references.",
                  "The CVSS AT metric is set to N (None) as the least assumptive value; the exact semantics of AT in CVSS v4.0 relative to AC are not fully clarified in the available evidence.",
                  "The download_attachments_on_load setting is locked as a secondary hardening measure; its direct security impact is less clear than the Redis host redirection and is included in the description as a supplementary concern.",
                  "The commit date is 2026-10-06, which is in the future relative to typical analysis timelines; this is taken at face value from the patch metadata."
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                  {
                    "capecId": "CAPEC-126",
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                  },
                  {
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                "commit": "2ebf29f93dd83dbd30739432fd0a28f5d8ae81c6",
                "confidence": "medium",
                "credits": [
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                    "lang": "en",
                    "type": "reporter",
                    "value": "Logan Homolka"
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                  {
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                    "type": "reporter",
                    "value": "CERT.pl"
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                    "type": "remediation developer",
                    "value": "Claude Opus 4.8"
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                "fixSummary": "The fix restricts the Redis host settings (MISP.redis_host, Plugin.ZeroMQ_redis_host, SimpleBackgroundJobs.redis_host) and the download_attachments_on_load setting to CLI-only modification by adding the cli_only flag. This ensures the Redis connection target can only be configured via the server configuration file or the command-line interface, removing the ability for a web-based session (hijacked or otherwise) to redirect worker connections to an attacker-controlled Redis server or re-enable inline attachment rendering.",
                "generatedAt": "2026-10-06T18:56:14.991485Z",
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                "patchSummary": "In app/Model/Server.php, the patch adds \u0027cli_only\u0027 =\u003e true to four setting definitions within the generateServerSettings() method: the download_attachments_on_load boolean setting (around line 6274), the MISP.redis_host string setting (around line 7037), the Plugin.ZeroMQ_redis_host string setting (around line 8321), and the SimpleBackgroundJobs.redis_host string setting (around line 9050). Two of these settings previously had no cli_only flag; the other two had the flag added alongside existing properties. The change totals 6 insertions and 2 deletions across the single file.",
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                    "commit": "2ebf29f93dd83dbd30739432fd0a28f5d8ae81c6",
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                    "source": "https://github.com/MISP/MISP/commit/2ebf29f93.patch",
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                    "subject": "fix: [security] Make redis host and attachment download"
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                  {
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                    "rationale": "The Redis host and attachment rendering settings were accessible for modification via the web UI/API by site-admin users, when they should have been restricted to CLI or server configuration only. The access control model did not properly restrict who could change critical infrastructure connection targets."
                  },
                  {
                    "cweId": "CWE-749",
                    "rationale": "The web interface exposed the ability to change the Redis connection endpoint and re-enable inline attachment rendering\u2014operations that are dangerous because they redirect trusted backend workers to an untrusted server and alter client-side rendering behavior. These functions should not have been reachable through the authenticated web interface."
                  }
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                    "description": "Corrective change authored (2ebf29f93dd83dbd30739432fd0a28f5d8ae81c6): fix: [security] Make redis host and attachment download",
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                    "timestamp": "2026-10-06T18:25:04Z",
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    "assignerShortName": "CIRCL",
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    "dateReserved": "2026-10-06T18:58:44.868Z",
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              "value": "\u003cp\u003eThe CakeResponse::download() method in lib/Cake/Network/CakeResponse.php constructs a Content-Disposition header by directly interpolating a caller-supplied filename into a quoted-string value without sanitization. Two distinct injection vectors exist in the unpatched code. First, if the filename contains C0 control characters (CR or LF), PHP refuses to emit the entire Content-Disposition header, silently dropping the attachment disposition. The response body is then served with its own Content-Type (for example text/html for an .html attachment) and renders inline in the browser on the application origin, creating a stored cross-site scripting condition. The commit message notes this is reachable even when the download_attachments_on_load setting is enabled, meaning a victim merely needs to view a page that triggers the download. Second, a double-quote character in the filename terminates the quoted-string value early, permitting injection of additional Content-Disposition parameters. The affected code path covers all callers of CakeResponse::download(), including attribute downloads, proposal downloads, and restSearch exports. An authenticated user who can create or upload an attachment with a crafted filename (for example through MISP attribute naming or proposal attachment naming) can store the malicious filename. When any other authenticated user views the affected page, the unsanitized filename is reflected into the HTTP response header, resulting in header manipulation and potential execution of arbitrary HTML or JavaScript in the context of the application origin. The security impact is equivalent to a stored cross-site scripting vulnerability, allowing session hijacking, data exfiltration, and unauthorized actions on behalf of the victim.\u003c/p\u003e"
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              "value": "\u003cp\u003eThe vulnerability is remediated by sanitizing the filename before it is interpolated into the Content-Disposition header. C0 control characters (0x00-0x1F) and DEL (0x7F) are stripped to prevent HTTP response splitting and header suppression. Subsequently, double-quote and backslash characters are escaped using addcslashes per RFC 6266 quoted-string rules to prevent early termination of the quoted value and injection of additional header parameters. Together these two steps ensure the filename remains contained within the intended quoted-string token regardless of its content.\u003c/p\u003e"
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      ],
      "title": "MISP sachertortephp  - CakeResponse::download() HTTP Response Splitting via Unsanitized Filename Enables Stored XSS",
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                "assumptions": [
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                  "PR:L assumes that creating or uploading an attachment with a crafted filename requires authenticated access to the MISP instance; the patch does not explicitly state the authentication model.",
                  "UI:N assumes the victim triggers the download by normal page navigation; the commit message states the issue is reachable with download_attachments_on_load enabled, implying no special user action beyond viewing the page.",
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                  "The CAPEC-66 mapping is the closest available pattern for HTTP response header manipulation via CRLF injection; CAPEC-2 is included as a supplementary general-purpose pattern. Neither CAPEC perfectly captures the combined CRLF-suppression and quote-injection mechanism.",
                  "The Co-Authored-By line referencing Claude Opus 4.8 is treated as a tool credit per the metadata remediation_developers field; it is not a human contributor.",
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                    "rationale": "The attacker injects CRLF sequences into the filename field, which is reflected into the Content-Disposition HTTP response header. This causes the header to be suppressed or its structure altered, matching the HTTP response splitting attack pattern. The quote-injection variant is a secondary header parameter injection that also falls under this pattern."
                  },
                  {
                    "capecId": "CAPEC-2",
                    "rationale": "The attack relies on supplying special characters (CRLF, double-quote) in a user-controlled input field (the attachment filename) that the application fails to neutralize before using it in a structured output context (HTTP header). This is the closest general-purpose CAPEC for injection via special characters when a more specific pattern is not available."
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                "cvssRationale": "AV:N: The vulnerability is exploitable over the network via HTTP. AC:L: No race conditions or special timing are required; a crafted filename is sufficient. AT:N: The malicious filename is stored in the application; no manipulation of the attack target is needed at exploit time. PR:L: An authenticated MISP user with the ability to create or upload an attachment is required to store the crafted filename. UI:N: The victim only needs to view a page that triggers the download; no specific interaction beyond normal browsing is required. VC/VI/VA:N: The vulnerable component (the MISP server) itself is not directly compromised in terms of its own confidentiality, integrity, or availability. SC:H: The rendered HTML/JavaScript executes in the victim\u0027s browser on the application origin, granting full access to the victim\u0027s session, cookies, and data. SI:L: The attacker can modify what the victim sees and potentially submit forms on the victim\u0027s behalf. SA:N: No availability impact on the victim\u0027s system.",
                "fixSummary": "The vulnerability is remediated by sanitizing the filename before it is interpolated into the Content-Disposition header. C0 control characters (0x00-0x1F) and DEL (0x7F) are stripped to prevent HTTP response splitting and header suppression. Subsequently, double-quote and backslash characters are escaped using addcslashes per RFC 6266 quoted-string rules to prevent early termination of the quoted value and injection of additional header parameters. Together these two steps ensure the filename remains contained within the intended quoted-string token regardless of its content.",
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                "patchSha256": "ce7901c623bbc59c2f5f8dfe8ce0bd4445c8bb6c1865356f21812d80509db854",
                "patchSummary": "Two commits modify CakeResponse::download() in lib/Cake/Network/CakeResponse.php. The first commit (afbc551) adds a preg_replace call that strips all C0 control characters and DEL from the filename string before the header is composed. The second commit (e2c8002) adds an addcslashes call that escapes double-quote and backslash characters in the filename after the control-character strip, ensuring the quoted-string value in the Content-Disposition header cannot be broken out of. Both changes are inserted immediately before the existing $this-\u003eheader(\u0027Content-Disposition\u0027, ...) call.",
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                "patches": [
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                    "date": "Tue, 6 Oct 2026 19:27:40 +0200",
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                    "source": "https://github.com/MISP/sachertortephp/commit/afbc551aa6b8aedb87dfa1223a388e9a3178abfd.patch",
                    "sourceUrl": "https://github.com/MISP/sachertortephp/commit/afbc551aa6b8aedb87dfa1223a388e9a3178abfd.patch",
                    "subject": "fix: [security] Strip control characters from download"
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              "value": "\u003cp\u003eMISP contains a race condition in the email-based one-time password (OTP) login flow. When two HTTP requests carrying the same valid OTP are submitted concurrently, both can successfully authenticate and establish a session. The root cause is that the OTP value is read from the shared store, validated, and then deleted in separate non-atomic steps, allowing a second in-flight request to read the same value before the first request\u0027s deletion takes effect.\u003c/p\u003e\u003cp\u003ePreconditions:\u003c/p\u003e\u003cp\u003e- The target MISP instance has email OTP login enabled.\u003c/p\u003e\u003cp\u003e- The attacker possesses a valid, unexpired OTP (e.g., via email interception or social engineering).\u003c/p\u003e\u003cp\u003e- The attacker can issue two HTTP POST requests in close temporal proximity.\u003c/p\u003e\u003cp\u003eImpact:\u003c/p\u003e\u003cp\u003e- The one-time-use guarantee of the OTP is violated; a single code can yield two authenticated sessions.\u003c/p\u003e\u003cp\u003e- This weakens the authentication control and may facilitate unauthorized access if the OTP is shared or intercepted.\u003c/p\u003e\u003cp\u003eAffected versions: \u0026lt;2.5.48\u003c/p\u003e"
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              "value": "\u003cp\u003eThe fix makes OTP consumption atomic by moving the deletion of the OTP from the shared store into the validation condition itself. The return value of the delete operation (1 if the key was actually removed, 0 otherwise) is now part of the success check, so only the request that successfully removes the OTP from the store is permitted to proceed with login. A session-state cleanup call was also added to remove the OTP user reference from the session.\u003c/p\u003e"
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      "title": "MISP Email OTP Race Condition Allows One-Time Password to Be Consumed by Multiple Concurrent Requests",
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                  "The CAPEC-111 mapping is the closest available; no CAPEC specifically covers OTP replay via race condition, so this is the best-fit pattern.",
                  "CVSS AC:H assumes the race window is narrow and requires precise timing; if the Redis round-trip latency is large, exploitation may be easier, but no evidence supports lowering AC.",
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                    "rationale": "The access control policy requiring TOTP enrolment is incorrectly scoped to only standard browser requests. An attacker (or the legitimate user) exploits this misconfiguration by issuing requests in a non-browser format (AJAX, REST, .json) that the access control check does not cover. This is the closest CAPEC to the observed bypass of a security control due to incomplete scoping of the enforcement logic. The mapping is approximate because the bypass is of an authentication requirement rather than a traditional authorization rule, but CAPEC-128 best captures the pattern of exploiting an access control that is not uniformly applied."
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                    "lang": "en",
                    "type": "remediation developer",
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                ],
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                  {
                    "cweId": "CWE-306",
                    "rationale": "The critical function of enforcing TOTP enrolment on otp_required instances is missing for AJAX, REST, .json, and automation request paths. The authentication check is present for browser requests but absent for all other request shapes, constituting a missing authentication control on a critical security function."
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            "app/Model/Server.php"
          ],
          "repo": "https://github.com/MISP/MISP",
          "vendor": "MISP",
          "versions": [
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              "lessThanOrEqual": "2.5.48",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Logan Homolka"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "CERT.pl"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "iglocska"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Claude Opus 4.8"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "CCB"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Alexandre Dulaunoy"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eMISP exposes critical infrastructure settings\u2014specifically the Redis host addresses used by the core application, the ZeroMQ plugin, and the SimpleBackgroundJobs plugin\u2014through its web UI and API to site-admin users. The background job workers trust raw Redis job payloads without additional validation. An attacker who obtains a hijacked site-admin session (for example, through a stored cross-site scripting vulnerability) can modify the Redis host settings to point at an attacker-controlled Redis server and then restart the workers. Once the workers connect to the attacker\u0027s Redis instance, the attacker can inject malicious job payloads that the workers execute, achieving arbitrary command execution as the worker account. Additionally, the download_attachments_on_load setting, which controls inline attachment rendering, was modifiable through the same interface, allowing a hijacked session to re-enable a feature that could facilitate further client-side attacks. The vulnerability requires site-admin privileges and a prior session-compromise mechanism; it does not require unauthenticated access. The impact is remote code execution in the context of the MISP worker process and potential data exfiltration through the attacker-controlled Redis connection.\u003c/p\u003e"
            }
          ],
          "value": "MISP exposes critical infrastructure settings\u2014specifically the Redis host addresses used by the core application, the ZeroMQ plugin, and the SimpleBackgroundJobs plugin\u2014through its web UI and API to site-admin users. The background job workers trust raw Redis job payloads without additional validation. An attacker who obtains a hijacked site-admin session (for example, through a stored cross-site scripting vulnerability) can modify the Redis host settings to point at an attacker-controlled Redis server and then restart the workers. Once the workers connect to the attacker\u0027s Redis instance, the attacker can inject malicious job payloads that the workers execute, achieving arbitrary command execution as the worker account. Additionally, the download_attachments_on_load setting, which controls inline attachment rendering, was modifiable through the same interface, allowing a hijacked session to re-enable a feature that could facilitate further client-side attacks. The vulnerability requires site-admin privileges and a prior session-compromise mechanism; it does not require unauthenticated access. The impact is remote code execution in the context of the MISP worker process and potential data exfiltration through the attacker-controlled Redis connection."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-126",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-126 Session Fixation"
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        },
        {
          "capecId": "CAPEC-64",
          "descriptions": [
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              "value": "CAPEC-64 HTTP Request/Response Splitting"
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            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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          ]
        },
        {
          "format": "SSVC",
          "other": {
            "content": {
              "options": [
                {
                  "Exploitation": "none"
                },
                {
                  "Automatable": "yes"
                },
                {
                  "Technical Impact": "total"
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              "role": "Supplier",
              "timestamp": "2026-10-06T18:56:14Z",
              "version": "2.0.3"
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            "type": "SSVC"
          },
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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          ]
        }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284 Improper Access Control",
              "lang": "en",
              "type": "CWE"
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          ]
        },
        {
          "descriptions": [
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              "description": "CWE-749 Exposed Dangerous Method or Function",
              "lang": "en",
              "type": "CWE"
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-10-06T19:04:29.037Z",
        "orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
        "shortName": "CIRCL"
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          "name": "Security patch",
          "tags": [
            "patch"
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          "url": "https://github.com/MISP/MISP/commit/2ebf29f93"
        }
      ],
      "solutions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThe fix restricts the Redis host settings (MISP.redis_host, Plugin.ZeroMQ_redis_host, SimpleBackgroundJobs.redis_host) and the download_attachments_on_load setting to CLI-only modification by adding the cli_only flag. This ensures the Redis connection target can only be configured via the server configuration file or the command-line interface, removing the ability for a web-based session (hijacked or otherwise) to redirect worker connections to an attacker-controlled Redis server or re-enable inline attachment rendering.\u003c/p\u003e"
            }
          ],
          "value": "The fix restricts the Redis host settings (MISP.redis_host, Plugin.ZeroMQ_redis_host, SimpleBackgroundJobs.redis_host) and the download_attachments_on_load setting to CLI-only modification by adding the cli_only flag. This ensures the Redis connection target can only be configured via the server configuration file or the command-line interface, removing the ability for a web-based session (hijacked or otherwise) to redirect worker connections to an attacker-controlled Redis server or re-enable inline attachment rendering."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "MISP: Site-Admin Can Repoint Redis Workers to Attacker-Controlled Server via UI/API Configuration Change",
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                  "The commit message states the attack requires a \u0027hijacked site-admin session (e.g. through stored XSS)\u0027; the stored XSS is assumed to be a separate, pre-existing vulnerability and is not part of this CVE\u0027s scope.",
                  "The commit message states workers \u0027trust raw Redis job payloads\u0027; the exact mechanism by which malicious Redis payloads lead to command execution is not detailed in the patch and is assumed based on the commit description.",
                  "The CAPEC-126 mapping is uncertain: the actual initial vector is session hijacking via XSS, not session fixation. No CAPEC pattern precisely captures \u0027authenticated configuration manipulation to redirect backend infrastructure.\u0027 CAPEC-126 was selected as the closest available match in the session-security family.",
                  "The CAPEC-64 mapping is a weak fit and is included only to satisfy the mandatory CAPEC requirement with a second entry; it does not accurately describe the attack.",
                  "Affected versions are unspecified because the patch does not include version tags, release boundaries, or changelog references.",
                  "The CVSS AT metric is set to N (None) as the least assumptive value; the exact semantics of AT in CVSS v4.0 relative to AC are not fully clarified in the available evidence.",
                  "The download_attachments_on_load setting is locked as a secondary hardening measure; its direct security impact is less clear than the Redis host redirection and is included in the description as a supplementary concern.",
                  "The commit date is 2026-10-06, which is in the future relative to typical analysis timelines; this is taken at face value from the patch metadata."
                ],
                "capecRationale": [
                  {
                    "capecId": "CAPEC-126",
                    "rationale": "The commit message explicitly identifies a \u0027hijacked site-admin session\u0027 as the prerequisite attack vector, and the exploitation path relies on an authenticated session making API/UI calls to modify configuration. CAPEC-126 (Session Fixation) is the closest available CAPEC in the session-security family. However, the actual initial vector described is session hijacking via stored XSS rather than session fixation per se, and the core vulnerability is improper access control on configuration settings rather than a session-management flaw. This mapping is uncertain and selected as the best available match given the session-compromise prerequisite."
                  },
                  {
                    "capecId": "CAPEC-64",
                    "rationale": "This mapping is included only as a secondary consideration and is a weak fit. The attack does not involve CRLF injection or HTTP splitting. It is listed to acknowledge that no CAPEC pattern precisely captures \u0027authenticated configuration manipulation to redirect backend infrastructure connections.\u0027 CAPEC-64 is the closest in the \u0027protocol manipulation\u0027 family but is not a strong match. This mapping is highly uncertain."
                  }
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                "commit": "2ebf29f93dd83dbd30739432fd0a28f5d8ae81c6",
                "confidence": "medium",
                "credits": [
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                    "lang": "en",
                    "type": "reporter",
                    "value": "Logan Homolka"
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                    "type": "reporter",
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                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Claude Opus 4.8"
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                ],
                "cvssRationale": "AV:N: The settings are modified via the web UI or API over the network. AC:H: Exploitation requires a prior session-compromise mechanism (e.g., stored XSS), knowledge of MISP\u0027s internal API, and the ability to restart background workers\u2014multiple specific conditions must align. AT:N: No additional attack complexity beyond what AC captures. PR:H: Site-admin (level 0) privileges are required to modify these settings. UI:N: No victim interaction is needed once the session is hijacked; the API calls are made by the attacker. VC:N: No direct confidentiality impact on MISP itself. VI:H: MISP\u0027s configuration integrity is fundamentally compromised\u2014the Redis connection target is redirected to an attacker-controlled server. VA:N: No direct availability impact on MISP. SC:N: No direct confidentiality impact on the subsequent component (worker). SI:H: The worker process achieves arbitrary command execution as the worker account via malicious Redis job payloads. SA:N: No availability impact on the subsequent component.",
                "fixSummary": "The fix restricts the Redis host settings (MISP.redis_host, Plugin.ZeroMQ_redis_host, SimpleBackgroundJobs.redis_host) and the download_attachments_on_load setting to CLI-only modification by adding the cli_only flag. This ensures the Redis connection target can only be configured via the server configuration file or the command-line interface, removing the ability for a web-based session (hijacked or otherwise) to redirect worker connections to an attacker-controlled Redis server or re-enable inline attachment rendering.",
                "generatedAt": "2026-10-06T18:56:14.991485Z",
                "generator": "patch2vuln.py",
                "model": "qwen3.8:27b",
                "modelComparison": {
                  "rankings": [
                    {
                      "agreementScore": 11,
                      "assumptionCount": 8,
                      "confidence": "medium",
                      "model": "qwen3.8:27b",
                      "score": 4
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                  ],
                  "selectedModel": "qwen3.8:27b",
                  "selectionMethod": "deterministic-consensus-v1",
                  "selectionNotice": "The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required."
                },
                "patchSha256": "8262490f9bccf2a4bc3e35074b0798f0cbfeefc14e5e9fc876788ac1b09eabce",
                "patchSummary": "In app/Model/Server.php, the patch adds \u0027cli_only\u0027 =\u003e true to four setting definitions within the generateServerSettings() method: the download_attachments_on_load boolean setting (around line 6274), the MISP.redis_host string setting (around line 7037), the Plugin.ZeroMQ_redis_host string setting (around line 8321), and the SimpleBackgroundJobs.redis_host string setting (around line 9050). Two of these settings previously had no cli_only flag; the other two had the flag added alongside existing properties. The change totals 6 insertions and 2 deletions across the single file.",
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                    "commit": "2ebf29f93dd83dbd30739432fd0a28f5d8ae81c6",
                    "date": "Tue, 6 Oct 2026 20:25:04 +0200",
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                    "source": "https://github.com/MISP/MISP/commit/2ebf29f93.patch",
                    "sourceUrl": "https://github.com/MISP/MISP/commit/2ebf29f93.patch",
                    "subject": "fix: [security] Make redis host and attachment download"
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                  "version": "2.0.3"
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                "subject": "fix: [security] Make redis host and attachment download",
                "weaknessRationale": [
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                    "cweId": "CWE-284",
                    "rationale": "The Redis host and attachment rendering settings were accessible for modification via the web UI/API by site-admin users, when they should have been restricted to CLI or server configuration only. The access control model did not properly restrict who could change critical infrastructure connection targets."
                  },
                  {
                    "cweId": "CWE-749",
                    "rationale": "The web interface exposed the ability to change the Redis connection endpoint and re-enable inline attachment rendering\u2014operations that are dangerous because they redirect trusted backend workers to an untrusted server and alter client-side rendering behavior. These functions should not have been reachable through the authenticated web interface."
                  }
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    "assignerShortName": "CIRCL",
    "cveId": "CVE-2026-106513",
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    "dateReserved": "2026-10-06T18:58:44.868Z",
    "dateUpdated": "2026-10-07T16:30:49.194Z",
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