Vulnerability-Lookup

CVE-2026-63074 (GCVE-0-2026-63074)

Vulnerability from cvelistv5 – Published: 2026-08-25 12:59 – Updated: 2026-08-25 14:36

Title

CMP Indefinite Cache Growth of ExtraCerts

Summary

Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid). If a server reuses an OSSL_CMP_CTX frequently, this cache of extraCerts may grow unboundedly, and a malicious client may flood a CMP server with requests driving this growth. Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service attacks in which an attacker sends messages intending to be rejected with a large list of additional certificates repeatedly, forcing the server to store them indefinitely. The issue was fixed by removing the added extra certs if the message is rejected, using the same method as when the context is configured to not do caching at all. FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 14:36 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

openssl mitre root

References

6 references

URL	Tags
https://openssl-library.org/news/secadv/20260825.txt	vendor-advisory
https://github.com/openssl/openssl/commit/74ae7f6…	patch
https://github.com/openssl/openssl/commit/01e5679…	patch
https://github.com/openssl/openssl/commit/75360af…	patch
https://github.com/openssl/openssl/commit/f636f9c…	patch
https://github.com/openssl/openssl/commit/21a5d96…	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.2 (semver) Affected: 3.6.0 , < 3.6.4 (semver) Affected: 3.5.0 , < 3.5.8 (semver) Affected: 3.4.0 , < 3.4.7 (semver) Affected: 3.0.0 , < 3.0.22 (semver)	guessed

Date Public

2026-08-25 11:36

Credits

Pavоl Žáčik (Red Hat) Neil Horman

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-63074",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T14:36:10.702053Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-25T14:36:13.170Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "4.0.2",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.6.4",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.5.8",
              "status": "affected",
              "version": "3.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.4.7",
              "status": "affected",
              "version": "3.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.22",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Pav\u043el \u017d\u00e1\u010dik (Red Hat)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Neil Horman"
        }
      ],
      "datePublic": "2026-08-25T11:36:16.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\u003cbr\u003eadditional certificates (extraCerts) sent in a CMP message, but never expunges\u003cbr\u003ethem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\u003cbr\u003efrequently, this cache of extraCerts may grow unboundedly, and a malicious\u003cbr\u003eclient may flood a CMP server with requests driving this growth.\u003cbr\u003e\u003cbr\u003eImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\u003cbr\u003efor the lifetime of a server process may observe unbounded memory growth in the\u003cbr\u003eevent a malicious client repeatedly sends requests containing unique extra\u003cbr\u003ecertificates, which may lead to OOM conditions.\u003cbr\u003e\u003cbr\u003eCWE: CWE-770: Allocation of Resources Without Limits or Throttling\u003cbr\u003e\u003cbr\u003eDescription: If a remote user sends CMP messages to a server with a list of\u003cbr\u003eextraCerts and the message is rejected, the extraCerts from the message remains\u003cbr\u003ein the server contexts untrusted certificate stack.  This exposes servers with\u003cbr\u003elong lived ctx objects to Denial of Service attacks in which an attacker sends\u003cbr\u003emessages intending to be rejected with a large list of additional certificates\u003cbr\u003erepeatedly, forcing the server to store them indefinitely.\u003cbr\u003e   \u003cbr\u003eThe issue was fixed by removing the added extra certs if the message is\u003cbr\u003erejected, using the same method as when the context is configured to not do\u003cbr\u003ecaching at all.\u003cbr\u003e\u003cbr\u003eFIPS impact: no\u003cbr\u003eAs the CMP code lives outside the FIPS module boundary, no FIPS\u003cbr\u003emodules are affected by this CVE."
            }
          ],
          "value": "Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\nadditional certificates (extraCerts) sent in a CMP message, but never expunges\nthem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\nfrequently, this cache of extraCerts may grow unboundedly, and a malicious\nclient may flood a CMP server with requests driving this growth.\n\nImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\nfor the lifetime of a server process may observe unbounded memory growth in the\nevent a malicious client repeatedly sends requests containing unique extra\ncertificates, which may lead to OOM conditions.\n\nCWE: CWE-770: Allocation of Resources Without Limits or Throttling\n\nDescription: If a remote user sends CMP messages to a server with a list of\nextraCerts and the message is rejected, the extraCerts from the message remains\nin the server contexts untrusted certificate stack.  This exposes servers with\nlong lived ctx objects to Denial of Service attacks in which an attacker sends\nmessages intending to be rejected with a large list of additional certificates\nrepeatedly, forcing the server to store them indefinitely.\n   \nThe issue was fixed by removing the added extra certs if the message is\nrejected, using the same method as when the context is configured to not do\ncaching at all.\n\nFIPS impact: no\nAs the CMP code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE."
        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "Low"
            },
            "type": "https://openssl-library.org/policies/general/security-policy/"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-25T12:59:58.278Z",
        "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "shortName": "openssl"
      },
      "references": [
        {
          "name": "OpenSSL Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://openssl-library.org/news/secadv/20260825.txt"
        },
        {
          "name": "4.0.2 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/74ae7f6df47a5767c1010b88c47507dfc5b32c46"
        },
        {
          "name": "3.6.4 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/01e567978a55fba18142a230380c31296049fae7"
        },
        {
          "name": "3.5.8 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/75360af9650d4e0c82ba0050c5c9912cd79e54af"
        },
        {
          "name": "3.4.7 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/f636f9ca0fa1bae5b42f9e787f025c96fb09c43a"
        },
        {
          "name": "3.0.22 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/21a5d9658b0c66daace60e10ea18ff32a448de9f"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CMP Indefinite Cache Growth of ExtraCerts",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2026-63074",
    "datePublished": "2026-08-25T12:59:58.278Z",
    "dateReserved": "2026-07-15T13:10:26.188Z",
    "dateUpdated": "2026-08-25T14:36:13.170Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-63074\",\"sourceIdentifier\":\"openssl-security@openssl.org\",\"published\":\"2026-08-25T13:19:26.283\",\"lastModified\":\"2026-08-25T15:16:36.243\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\\nadditional certificates (extraCerts) sent in a CMP message, but never expunges\\nthem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\\nfrequently, this cache of extraCerts may grow unboundedly, and a malicious\\nclient may flood a CMP server with requests driving this growth.\\n\\nImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\\nfor the lifetime of a server process may observe unbounded memory growth in the\\nevent a malicious client repeatedly sends requests containing unique extra\\ncertificates, which may lead to OOM conditions.\\n\\nCWE: CWE-770: Allocation of Resources Without Limits or Throttling\\n\\nDescription: If a remote user sends CMP messages to a server with a list of\\nextraCerts and the message is rejected, the extraCerts from the message remains\\nin the server contexts untrusted certificate stack.  This exposes servers with\\nlong lived ctx objects to Denial of Service attacks in which an attacker sends\\nmessages intending to be rejected with a large list of additional certificates\\nrepeatedly, forcing the server to store them indefinitely.\\n   \\nThe issue was fixed by removing the added extra certs if the message is\\nrejected, using the same method as when the context is configured to not do\\ncaching at all.\\n\\nFIPS impact: no\\nAs the CMP code lives outside the FIPS module boundary, no FIPS\\nmodules are affected by this CVE.\"}],\"affected\":[{\"source\":\"openssl-security@openssl.org\",\"affectedData\":[{\"vendor\":\"OpenSSL\",\"product\":\"OpenSSL\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"4.0.0\",\"lessThan\":\"4.0.2\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"3.6.0\",\"lessThan\":\"3.6.4\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"3.5.0\",\"lessThan\":\"3.5.8\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"3.4.0\",\"lessThan\":\"3.4.7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"3.0.0\",\"lessThan\":\"3.0.22\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-25T14:36:10.702053Z\",\"id\":\"CVE-2026-63074\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"openssl-security@openssl.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://github.com/openssl/openssl/commit/01e567978a55fba18142a230380c31296049fae7\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://github.com/openssl/openssl/commit/21a5d9658b0c66daace60e10ea18ff32a448de9f\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://github.com/openssl/openssl/commit/74ae7f6df47a5767c1010b88c47507dfc5b32c46\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://github.com/openssl/openssl/commit/75360af9650d4e0c82ba0050c5c9912cd79e54af\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://github.com/openssl/openssl/commit/f636f9ca0fa1bae5b42f9e787f025c96fb09c43a\",\"source\":\"openssl-security@openssl.org\"},{\"url\":\"https://openssl-library.org/news/secadv/20260825.txt\",\"source\":\"openssl-security@openssl.org\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-25T21:08:37+00:00",
      "cve": "CVE-2026-63074",
      "id": "CVE-2026-63074",
      "initial_release_date": "2026-08-25T00:00:00+00:00",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "55",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssl: CMP indefinite cache growth of ExtraCerts",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63074.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-63074\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-25T14:36:10.702053Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-25T14:36:07.661Z\"}}], \"cna\": {\"title\": \"CMP Indefinite Cache Growth of ExtraCerts\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Pav\\u043el \\u017d\\u00e1\\u010dik (Red Hat)\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Neil Horman\"}], \"metrics\": [{\"other\": {\"type\": \"https://openssl-library.org/policies/general/security-policy/\", \"content\": {\"text\": \"Low\"}}, \"format\": \"other\"}], \"affected\": [{\"vendor\": \"OpenSSL\", \"product\": \"OpenSSL\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.0.0\", \"lessThan\": \"4.0.2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.6.0\", \"lessThan\": \"3.6.4\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.5.0\", \"lessThan\": \"3.5.8\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.4.0\", \"lessThan\": \"3.4.7\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.0.0\", \"lessThan\": \"3.0.22\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-08-25T11:36:16.000Z\", \"references\": [{\"url\": \"https://openssl-library.org/news/secadv/20260825.txt\", \"name\": \"OpenSSL Advisory\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://github.com/openssl/openssl/commit/74ae7f6df47a5767c1010b88c47507dfc5b32c46\", \"name\": \"4.0.2 git commit\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/openssl/openssl/commit/01e567978a55fba18142a230380c31296049fae7\", \"name\": \"3.6.4 git commit\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/openssl/openssl/commit/75360af9650d4e0c82ba0050c5c9912cd79e54af\", \"name\": \"3.5.8 git commit\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/openssl/openssl/commit/f636f9ca0fa1bae5b42f9e787f025c96fb09c43a\", \"name\": \"3.4.7 git commit\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/openssl/openssl/commit/21a5d9658b0c66daace60e10ea18ff32a448de9f\", \"name\": \"3.0.22 git commit\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\\nadditional certificates (extraCerts) sent in a CMP message, but never expunges\\nthem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\\nfrequently, this cache of extraCerts may grow unboundedly, and a malicious\\nclient may flood a CMP server with requests driving this growth.\\n\\nImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\\nfor the lifetime of a server process may observe unbounded memory growth in the\\nevent a malicious client repeatedly sends requests containing unique extra\\ncertificates, which may lead to OOM conditions.\\n\\nCWE: CWE-770: Allocation of Resources Without Limits or Throttling\\n\\nDescription: If a remote user sends CMP messages to a server with a list of\\nextraCerts and the message is rejected, the extraCerts from the message remains\\nin the server contexts untrusted certificate stack.  This exposes servers with\\nlong lived ctx objects to Denial of Service attacks in which an attacker sends\\nmessages intending to be rejected with a large list of additional certificates\\nrepeatedly, forcing the server to store them indefinitely.\\n   \\nThe issue was fixed by removing the added extra certs if the message is\\nrejected, using the same method as when the context is configured to not do\\ncaching at all.\\n\\nFIPS impact: no\\nAs the CMP code lives outside the FIPS module boundary, no FIPS\\nmodules are affected by this CVE.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\u003cbr\u003eadditional certificates (extraCerts) sent in a CMP message, but never expunges\u003cbr\u003ethem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\u003cbr\u003efrequently, this cache of extraCerts may grow unboundedly, and a malicious\u003cbr\u003eclient may flood a CMP server with requests driving this growth.\u003cbr\u003e\u003cbr\u003eImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\u003cbr\u003efor the lifetime of a server process may observe unbounded memory growth in the\u003cbr\u003eevent a malicious client repeatedly sends requests containing unique extra\u003cbr\u003ecertificates, which may lead to OOM conditions.\u003cbr\u003e\u003cbr\u003eCWE: CWE-770: Allocation of Resources Without Limits or Throttling\u003cbr\u003e\u003cbr\u003eDescription: If a remote user sends CMP messages to a server with a list of\u003cbr\u003eextraCerts and the message is rejected, the extraCerts from the message remains\u003cbr\u003ein the server contexts untrusted certificate stack.  This exposes servers with\u003cbr\u003elong lived ctx objects to Denial of Service attacks in which an attacker sends\u003cbr\u003emessages intending to be rejected with a large list of additional certificates\u003cbr\u003erepeatedly, forcing the server to store them indefinitely.\u003cbr\u003e   \u003cbr\u003eThe issue was fixed by removing the added extra certs if the message is\u003cbr\u003erejected, using the same method as when the context is configured to not do\u003cbr\u003ecaching at all.\u003cbr\u003e\u003cbr\u003eFIPS impact: no\u003cbr\u003eAs the CMP code lives outside the FIPS module boundary, no FIPS\u003cbr\u003emodules are affected by this CVE.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770 Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"shortName\": \"openssl\", \"dateUpdated\": \"2026-08-25T12:59:58.278Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-63074\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-25T14:36:13.170Z\", \"dateReserved\": \"2026-07-15T13:10:26.188Z\", \"assignerOrgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"datePublished\": \"2026-08-25T12:59:58.278Z\", \"assignerShortName\": \"openssl\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-63074

Vulnerability from fkie_nvd - Published: 2026-08-25 13:19 - Updated: 2026-08-25 15:16

Severity

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	openssl-security@openssl.org	https://github.com/openssl/openssl/commit/01e567978a55fba18142a230380c31296049fae7
	openssl-security@openssl.org	https://github.com/openssl/openssl/commit/21a5d9658b0c66daace60e10ea18ff32a448de9f
	openssl-security@openssl.org	https://github.com/openssl/openssl/commit/74ae7f6df47a5767c1010b88c47507dfc5b32c46
	openssl-security@openssl.org	https://github.com/openssl/openssl/commit/75360af9650d4e0c82ba0050c5c9912cd79e54af
	openssl-security@openssl.org	https://github.com/openssl/openssl/commit/f636f9ca0fa1bae5b42f9e787f025c96fb09c43a
	openssl-security@openssl.org	https://openssl-library.org/news/secadv/20260825.txt

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "4.0.2",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.6.4",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.5.8",
              "status": "affected",
              "version": "3.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.4.7",
              "status": "affected",
              "version": "3.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.22",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "openssl-security@openssl.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\nadditional certificates (extraCerts) sent in a CMP message, but never expunges\nthem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\nfrequently, this cache of extraCerts may grow unboundedly, and a malicious\nclient may flood a CMP server with requests driving this growth.\n\nImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\nfor the lifetime of a server process may observe unbounded memory growth in the\nevent a malicious client repeatedly sends requests containing unique extra\ncertificates, which may lead to OOM conditions.\n\nCWE: CWE-770: Allocation of Resources Without Limits or Throttling\n\nDescription: If a remote user sends CMP messages to a server with a list of\nextraCerts and the message is rejected, the extraCerts from the message remains\nin the server contexts untrusted certificate stack.  This exposes servers with\nlong lived ctx objects to Denial of Service attacks in which an attacker sends\nmessages intending to be rejected with a large list of additional certificates\nrepeatedly, forcing the server to store them indefinitely.\n   \nThe issue was fixed by removing the added extra certs if the message is\nrejected, using the same method as when the context is configured to not do\ncaching at all.\n\nFIPS impact: no\nAs the CMP code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE."
    }
  ],
  "id": "CVE-2026-63074",
  "lastModified": "2026-08-25T15:16:36.243",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63074",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-25T14:36:10.702053Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-25T13:19:26.283",
  "references": [
    {
      "source": "openssl-security@openssl.org",
      "url": "https://github.com/openssl/openssl/commit/01e567978a55fba18142a230380c31296049fae7"
    },
    {
      "source": "openssl-security@openssl.org",
      "url": "https://github.com/openssl/openssl/commit/21a5d9658b0c66daace60e10ea18ff32a448de9f"
    },
    {
      "source": "openssl-security@openssl.org",
      "url": "https://github.com/openssl/openssl/commit/74ae7f6df47a5767c1010b88c47507dfc5b32c46"
    },
    {
      "source": "openssl-security@openssl.org",
      "url": "https://github.com/openssl/openssl/commit/75360af9650d4e0c82ba0050c5c9912cd79e54af"
    },
    {
      "source": "openssl-security@openssl.org",
      "url": "https://github.com/openssl/openssl/commit/f636f9ca0fa1bae5b42f9e787f025c96fb09c43a"
    },
    {
      "source": "openssl-security@openssl.org",
      "url": "https://openssl-library.org/news/secadv/20260825.txt"
    }
  ],
  "sourceIdentifier": "openssl-security@openssl.org",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "openssl-security@openssl.org",
      "type": "Secondary"
    }
  ]
}

GHSA-2Q27-MPM9-44M4

Vulnerability from github – Published: 2026-08-25 15:32 – Updated: 2026-08-25 15:32

Details

Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions.

CWE: CWE-770: Allocation of Resources Without Limits or Throttling

Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service attacks in which an attacker sends messages intending to be rejected with a large list of additional certificates repeatedly, forcing the server to store them indefinitely.

The issue was fixed by removing the added extra certs if the message is rejected, using the same method as when the context is configured to not do caching at all.

FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

Severity

5.9 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-63074"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-25T13:19:26Z",
    "severity": "MODERATE"
  },
  "details": "Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches\nadditional certificates (extraCerts) sent in a CMP message, but never expunges\nthem (for instance if they are invalid).  If a server reuses an OSSL_CMP_CTX\nfrequently, this cache of extraCerts may grow unboundedly, and a malicious\nclient may flood a CMP server with requests driving this growth.\n\nImpact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX\nfor the lifetime of a server process may observe unbounded memory growth in the\nevent a malicious client repeatedly sends requests containing unique extra\ncertificates, which may lead to OOM conditions.\n\nCWE: CWE-770: Allocation of Resources Without Limits or Throttling\n\nDescription: If a remote user sends CMP messages to a server with a list of\nextraCerts and the message is rejected, the extraCerts from the message remains\nin the server contexts untrusted certificate stack.  This exposes servers with\nlong lived ctx objects to Denial of Service attacks in which an attacker sends\nmessages intending to be rejected with a large list of additional certificates\nrepeatedly, forcing the server to store them indefinitely.\n   \nThe issue was fixed by removing the added extra certs if the message is\nrejected, using the same method as when the context is configured to not do\ncaching at all.\n\nFIPS impact: no\nAs the CMP code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE.",
  "id": "GHSA-2q27-mpm9-44m4",
  "modified": "2026-08-25T15:32:59Z",
  "published": "2026-08-25T15:32:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63074"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/01e567978a55fba18142a230380c31296049fae7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/21a5d9658b0c66daace60e10ea18ff32a448de9f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/74ae7f6df47a5767c1010b88c47507dfc5b32c46"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/75360af9650d4e0c82ba0050c5c9912cd79e54af"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/f636f9ca0fa1bae5b42f9e787f025c96fb09c43a"
    },
    {
      "type": "WEB",
      "url": "https://openssl-library.org/news/secadv/20260825.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

ubuntu-cve-2026-63074

Vulnerability from osv_ubuntu

Published

2026-08-25 00:00

Modified

2026-08-25 00:00

Summary

Details

CMP Indefinite Cache Growth of ExtraCerts

Severity

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2026-63074	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-63074	REPORT
	https://ubuntu.com/security/notices/USN-8678-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nodejs",
            "binary_version": "4.2.6~dfsg-1ubuntu4.2+esm3"
          },
          {
            "binary_name": "nodejs-legacy",
            "binary_version": "4.2.6~dfsg-1ubuntu4.2+esm3"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@4.2.6~dfsg-1ubuntu4.2+esm3?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.10.25~dfsg2-2ubuntu1",
        "4.2.2~dfsg-1",
        "4.2.3~dfsg-1",
        "4.2.4~dfsg-1ubuntu1",
        "4.2.4~dfsg-2",
        "4.2.6~dfsg-1ubuntu1",
        "4.2.6~dfsg-1ubuntu4",
        "4.2.6~dfsg-1ubuntu4.1",
        "4.2.6~dfsg-1ubuntu4.2",
        "4.2.6~dfsg-1ubuntu4.2+esm1",
        "4.2.6~dfsg-1ubuntu4.2+esm2",
        "4.2.6~dfsg-1ubuntu4.2+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nodejs",
            "binary_version": "8.10.0~dfsg-2ubuntu0.4+esm6"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@8.10.0~dfsg-2ubuntu0.4+esm6?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.11.4~dfsg-1ubuntu1",
        "6.11.4~dfsg-1ubuntu2",
        "6.12.0~dfsg-1ubuntu1",
        "6.12.0~dfsg-2ubuntu1",
        "6.12.0~dfsg-2ubuntu2",
        "8.10.0~dfsg-2",
        "8.10.0~dfsg-2ubuntu0.2",
        "8.10.0~dfsg-2ubuntu0.3",
        "8.10.0~dfsg-2ubuntu0.4",
        "8.10.0~dfsg-2ubuntu0.4+esm1",
        "8.10.0~dfsg-2ubuntu0.4+esm2",
        "8.10.0~dfsg-2ubuntu0.4+esm3",
        "8.10.0~dfsg-2ubuntu0.4+esm4",
        "8.10.0~dfsg-2ubuntu0.4+esm5",
        "8.10.0~dfsg-2ubuntu0.4+esm6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.29"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.29"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.29?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.2-0ubuntu1.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1l-1ubuntu1",
        "3.0.0-1ubuntu1",
        "3.0.1-0ubuntu1",
        "3.0.2-0ubuntu1",
        "3.0.2-0ubuntu1.1",
        "3.0.2-0ubuntu1.2",
        "3.0.2-0ubuntu1.4",
        "3.0.2-0ubuntu1.5",
        "3.0.2-0ubuntu1.6",
        "3.0.2-0ubuntu1.7",
        "3.0.2-0ubuntu1.8",
        "3.0.2-0ubuntu1.9",
        "3.0.2-0ubuntu1.10",
        "3.0.2-0ubuntu1.12",
        "3.0.2-0ubuntu1.13",
        "3.0.2-0ubuntu1.14",
        "3.0.2-0ubuntu1.15",
        "3.0.2-0ubuntu1.16",
        "3.0.2-0ubuntu1.17",
        "3.0.2-0ubuntu1.18",
        "3.0.2-0ubuntu1.19",
        "3.0.2-0ubuntu1.20",
        "3.0.2-0ubuntu1.21",
        "3.0.2-0ubuntu1.23",
        "3.0.2-0ubuntu1.25",
        "3.0.2-0ubuntu1.26"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.12+Fips1"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.12+Fips1"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-preview:22.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.12+Fips1?arch=source\u0026distro=fips-preview/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.2-0ubuntu1.10+Fips1",
        "3.0.2-0ubuntu1.12+Fips1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "openssl-fips-module-3",
            "binary_version": "3.0.5-0ubuntu0.1+Fips2.1"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-preview:22.04:LTS",
        "name": "openssl-fips",
        "purl": "pkg:deb/ubuntu/openssl-fips@3.0.5-0ubuntu0.1+Fips2.1?arch=source\u0026distro=fips-preview/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.5-0ubuntu0.1+Fips2.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.26+Fips1"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.26+Fips1"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:22.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.26+Fips1?arch=source\u0026distro=fips-updates/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.2-0ubuntu1.10+Fips1",
        "3.0.2-0ubuntu1.12+Fips1",
        "3.0.2-0ubuntu1.14+Fips1",
        "3.0.2-0ubuntu1.15+Fips1",
        "3.0.2-0ubuntu1.16+Fips1",
        "3.0.2-0ubuntu1.17+Fips1",
        "3.0.2-0ubuntu1.18+Fips1",
        "3.0.2-0ubuntu1.19+Fips1",
        "3.0.2-0ubuntu1.20+Fips1",
        "3.0.2-0ubuntu1.21+Fips1",
        "3.0.2-0ubuntu1.23+Fips1",
        "3.0.2-0ubuntu1.25+Fips1",
        "3.0.2-0ubuntu1.26+Fips1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "openssl-fips-module-3",
            "binary_version": "3.0.5-0ubuntu0.2+Fips1"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:22.04:LTS",
        "name": "openssl-fips",
        "purl": "pkg:deb/ubuntu/openssl-fips@3.0.5-0ubuntu0.2+Fips1?arch=source\u0026distro=fips-updates/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.5-0ubuntu0.1+Fips2.1",
        "3.0.5-0ubuntu0.2+Fips1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "efi-shell-aa64",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "efi-shell-arm",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "efi-shell-ia32",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "efi-shell-riscv64",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "efi-shell-x64",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "ovmf",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "ovmf-ia32",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "ovmf-legacy",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "qemu-efi-arm",
            "binary_version": "2024.02-2ubuntu0.9"
          },
          {
            "binary_name": "qemu-efi-riscv64",
            "binary_version": "2024.02-2ubuntu0.9"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "edk2",
        "purl": "pkg:deb/ubuntu/edk2@2024.02-2ubuntu0.9?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2023.05-2",
        "2023.11-2",
        "2023.11-3",
        "2023.11-4",
        "2023.11-5",
        "2023.11-6",
        "2023.11-8",
        "2024.02-1",
        "2024.02-2",
        "2024.02-2ubuntu0.1",
        "2024.02-2ubuntu0.3",
        "2024.02-2ubuntu0.4",
        "2024.02-2ubuntu0.5",
        "2024.02-2ubuntu0.6",
        "2024.02-2ubuntu0.7",
        "2024.02-2ubuntu0.8",
        "2024.02-2ubuntu0.9"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3t64",
            "binary_version": "3.0.13-0ubuntu3.15"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.13-0ubuntu3.15"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.13-0ubuntu3.15?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.13-0ubuntu3.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.10-1ubuntu2",
        "3.0.10-1ubuntu2.1",
        "3.0.10-1ubuntu3",
        "3.0.10-1ubuntu4",
        "3.0.13-0ubuntu2",
        "3.0.13-0ubuntu3",
        "3.0.13-0ubuntu3.1",
        "3.0.13-0ubuntu3.2",
        "3.0.13-0ubuntu3.3",
        "3.0.13-0ubuntu3.4",
        "3.0.13-0ubuntu3.5",
        "3.0.13-0ubuntu3.6",
        "3.0.13-0ubuntu3.7",
        "3.0.13-0ubuntu3.9",
        "3.0.13-0ubuntu3.11",
        "3.0.13-0ubuntu3.12"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "openssl-fips-module-3",
            "binary_version": "3.0.13-0ubuntu3.12+Fips1"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:24.04:LTS",
        "name": "openssl-fips",
        "purl": "pkg:deb/ubuntu/openssl-fips@3.0.13-0ubuntu3.12+Fips1?arch=source\u0026distro=fips-updates/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.13-0ubuntu3+Fips1",
        "3.0.13-0ubuntu3.6+Fips1",
        "3.0.13-0ubuntu3.12+Fips1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "efi-shell-aa64",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "efi-shell-loongarch64",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "efi-shell-riscv64",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "efi-shell-x64",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "ovmf",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "ovmf-amdsev",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "ovmf-generic",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "ovmf-inteltdx",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "ovmf-legacy",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "qemu-efi-loongarch64",
            "binary_version": "2025.11-3ubuntu7"
          },
          {
            "binary_name": "qemu-efi-riscv64",
            "binary_version": "2025.11-3ubuntu7"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "edk2",
        "purl": "pkg:deb/ubuntu/edk2@2025.11-3ubuntu7?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2025.02-8ubuntu3",
        "2025.11-3ubuntu6",
        "2025.11-3ubuntu7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3t64",
            "binary_version": "3.5.5-1ubuntu3.4"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.5.5-1ubuntu3.4"
          },
          {
            "binary_name": "openssl-provider-legacy",
            "binary_version": "3.5.5-1ubuntu3.4"
          }
        ],
        "priority_reason": "OpenSSL developers have rated this low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.5.5-1ubuntu3.4?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.5-1ubuntu3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.3-1ubuntu2",
        "3.5.5-1ubuntu1",
        "3.5.5-1ubuntu3",
        "3.5.5-1ubuntu3.2",
        "3.5.5-1ubuntu3.3"
      ]
    }
  ],
  "aliases": [],
  "details": "CMP Indefinite Cache Growth of ExtraCerts",
  "id": "UBUNTU-CVE-2026-63074",
  "modified": "2026-08-25T00:00:00Z",
  "published": "2026-08-25T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-63074"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-63074"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8678-1"
    }
  ],
  "related": [
    "USN-8678-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-63074"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-63074 (GCVE-0-2026-63074)

FKIE_CVE-2026-63074

GHSA-2Q27-MPM9-44M4

ubuntu-cve-2026-63074

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature