Common Weakness Enumeration
CWE-942
AllowedPermissive Cross-domain Security Policy with Untrusted Domains
Abstraction: Variant · Status: Incomplete
The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.
213 vulnerabilities reference this CWE, most recent first.
CVE-2026-54290 (GCVE-0-2026-54290)
Vulnerability from cvelistv5 – Published: 2026-06-22 17:15 – Updated: 2026-06-22 17:26
VLAI
EPSS
VEX
Title
Hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard
Summary
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, with credentials: true and no explicit origin (the default wildcard), the CORS Middleware reflects the request's Origin and sends Access-Control-Allow-Credentials: true. Any site can then make credentialed cross-origin requests and read the responses, exposing cookie-authenticated endpoints to arbitrary origins. This vulnerability is fixed in 4.12.25.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:26 UTC
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/honojs/hono/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-53656 (GCVE-0-2026-53656)
Vulnerability from cvelistv5 – Published: 2026-08-21 20:34 – Updated: 2026-08-21 21:42
VLAI
EPSS
VEX
Title
FiftyOne App server uses wildcard CORS (Access-Control-Allow-Origin: *), enabling cross-origin reads of local server data
Summary
FiftyOne is an open-source platform for refining high-quality datasets and visual AI models. Prior to 1.17.0, the FiftyOne App/API server in fiftyone/server/app.py and the /media route in fiftyone/server/routes/media.py unconditionally return Access-Control-Allow-Origin: *. Because the embedded server is local and unauthenticated, a malicious website visited by the user can read cross-origin responses. The /media endpoint accepts a filesystem path, allowing a drive-by page to read files accessible to the server process and exfiltrate them without additional clicks. The allowed_origins configuration and FIFTYONE_ALLOWED_ORIGINS environment variable now make cross-origin access explicit, while the default policy is same-origin. This issue is fixed in version 1.17.0.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 20:58 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/voxel51/fiftyone/security/advi… | x_refsource_CONFIRM |
| https://github.com/voxel51/fiftyone/commit/6c4fa1… | x_refsource_MISC |
| https://github.com/voxel51/fiftyone/commit/7c5b92… | x_refsource_MISC |
| https://github.com/voxel51/fiftyone/releases/tag/… | x_refsource_MISC |
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CVE-2026-53649 (GCVE-0-2026-53649)
Vulnerability from cvelistv5 – Published: 2026-09-02 17:21 – Updated: 2026-09-04 02:49
VLAI
EPSS
VEX
Title
Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE
Summary
Joro is a web exploitation framework. Prior to version 1.1.1, Joro's default proxy mode exposes a local API on 127.0.0.1:9090 that performs no authentication and applies a wildcard CORS policy. Because plugin uploads use the CORS-safelisted multipart/form-data content type, cross-origin JavaScript on any page the operator visits can reach privileged endpoints - including uploading a native plugin and triggering a restart - directly through the operator's browser, with no preflight or credentials. Since plugins execute on load, this yields unauthenticated remote code execution as the operator's user from a single page visit. This issue has been patched in version 1.1.1.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 02:49 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/BishopFox/joro/security/adviso… | x_refsource_CONFIRM |
| https://github.com/BishopFox/joro/releases/tag/1.1.1 | x_refsource_MISC |
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CVE-2026-50088 (GCVE-0-2026-50088)
Vulnerability from cvelistv5 – Published: 2026-06-12 15:01 – Updated: 2026-06-12 15:51
VLAI
EPSS
VEX
Title
Aqara Developer Portal cross-origin resource sharing
Summary
The Aqara Developer Portal (developer.aqara.com) and shared test environments (developer-test.aqara.com, aiot-test.aqara.com) exhibit cross-origin request sharing, which is an instance of "CWE-942: Permissive Cross-domain Policy with Untrusted Domains," and has an estimated CVSS of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N (8.2 High).
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-12 15:51 UTC
CWE
- CWE-942 - Permissive cross-domain security policy with untrusted domains
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/xn0tsa/theres-no-place-like-home | technical-description |
| https://www.runzero.com/advisories/aqara-dev-port… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Aqara | Aqara Developer Portal |
Affected:
2026-04-20 , < 0
(date)
|
|
| Aqara | Aqara Developer Test Portal |
Affected:
2026-04-20 , < 0
(date)
|
Date Public
2026-06-12 15:00
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CVE-2026-50087 (GCVE-0-2026-50087)
Vulnerability from cvelistv5 – Published: 2026-06-12 15:01 – Updated: 2026-06-12 15:52
VLAI
EPSS
VEX
Title
Aqara IAM/SSO Gateway cross-origin resource sharing
Summary
The Aqara IAM/SSO gateway (gw-builder.aqara.com) exhibits a cross-origin request sharing vulnerability, which is an instance of "CWE-942: Permissive Cross-domain Policy with Untrusted Domains," and has an estimated CVSS of CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N (8.2 High).
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-12 15:51 UTC
CWE
- CWE-942 - Permissive cross-domain security policy with untrusted domains
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/xn0tsa/theres-no-place-like-home | technical-description |
| https://www.runzero.com/advisories/aqara-iam-sso-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Aqara | Aqara IAM/SSO Gateway |
Affected:
2026-04-20 , < 0
(date)
|
Date Public
2026-06-12 15:00
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CVE-2026-46685 (GCVE-0-2026-46685)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:41 – Updated: 2026-05-28 19:22
VLAI
EPSS
VEX
Title
RustFS: Reflective CORS with credentials on S3 listener; unauthenticated license metadata endpoint on console
Summary
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, when RUSTFS_CORS_ALLOWED_ORIGINS is unset, the RustFS S3 listener's ConditionalCorsLayer reflects any request Origin value back as Access-Control-Allow-Origin and also sets Access-Control-Allow-Credentials: true and Access-Control-Allow-Headers: * on responses, including preflight responses and error responses. This creates a permissive cross-domain policy with untrusted origins. A browser visiting an attacker-controlled page can issue credentialed cross-origin requests to a reachable RustFS deployment and read the response when the victim browser has ambient credentials for the RustFS origin, such as saved HTTP Basic Auth credentials, reverse-proxy SSO cookies, or TLS client certificates. This vulnerability is fixed in 1.0.0-beta.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:21 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/rustfs/rustfs/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-46608 (GCVE-0-2026-46608)
Vulnerability from cvelistv5 – Published: 2026-06-25 18:05 – Updated: 2026-06-26 18:42
VLAI
EPSS
VEX
Title
Glances: XML-RPC Multi-Origin CORS Configuration Silently Falls Back to Wildcard (Incomplete Fix for CVE-2026-33533)
Summary
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s) introduced a configurable CORS origin list in version 4.5.3 as a mitigation for CVE-2026-33533. However, the implementation silently falls back to Access-Control-Allow-Origin: * whenever cors_origins contains more than one entry. An operator who configures an explicit two-entry allowlist (e.g. two internal dashboard origins) intending to restrict browser access instead receives the unrestricted wildcard. A malicious web page served from any origin can issue a CORS simple request to /RPC2 and read the full system monitoring dataset without the victim's knowledge. This vulnerability is fixed in 4.5.5.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 17:50 UTC
CWE
Assigner
References
2 references
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|---|---|
| https://github.com/nicolargo/glances/security/adv… | x_refsource_CONFIRM |
| https://github.com/nicolargo/glances/releases/tag… | x_refsource_MISC |
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CVE-2026-46431 (GCVE-0-2026-46431)
Vulnerability from cvelistv5 – Published: 2026-05-26 16:42 – Updated: 2026-05-26 17:39
VLAI
EPSS
VEX
Title
Algernon: Auto-refresh SSE event server sets Access-Control-Allow-Origin: *
Summary
Algernon is a small self-contained pure-Go web server. Prior to 1.17.7, the SSE event server's Access-Control-Allow-Origin response header was hardcoded to the wildcard * regardless of the caller's Origin. Because EventSource does not preflight and does not send cookies, the wildcard is sufficient to let any third-party page the developer visits open a cross-origin EventSource to the SSE port and read the live filename stream from JavaScript. This vulnerability is fixed in 1.17.7.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 17:38 UTC
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/xyproto/algernon/security/advi… | x_refsource_CONFIRM |
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CVE-2026-46409 (GCVE-0-2026-46409)
Vulnerability from cvelistv5 – Published: 2026-08-07 22:11 – Updated: 2026-08-11 01:19
VLAI
EPSS
VEX
Title
OpenYak local API: unauthenticated CSRF chain leads to Remote Code Execution
Summary
OpenYak is a local-first agent runtime for reliable tool-using models, with a desktop workspace built on top. Prior to version 1.1.3, the OpenYak desktop backend binds an HTTP API to `127.0.0.1:<random port>` (commonly 19141) without server-side Origin validation, loopback authentication, or Content-Type enforcement, and with a wildcard CORS policy. Any webpage a user visits while OpenYak is running can issue cross-origin requests to this local server — the browser acts as a proxy into loopback, bypassing OS-level network isolation. Chained, this lets a malicious page execute arbitrary shell commands on the host (RCE) via the build agent with `permission_presets.bash=true`, shut down the service, and exfiltrate chat history and account PII — with no user interaction beyond opening the page. Version 1.1.3 patches the issue.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 01:18 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
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],
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"scope": "CHANGED",
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"description": "CWE-352: Cross-Site Request Forgery (CSRF)",
"lang": "en",
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CVE-2026-45021 (GCVE-0-2026-45021)
Vulnerability from cvelistv5 – Published: 2026-05-28 17:45 – Updated: 2026-05-28 19:30
VLAI
EPSS
VEX
Title
Kuma: Default kuma-cp leaks admin token cross-origin via CORS wildcard + LocalhostIsAdmin
Summary
Kuma is a modern Envoy-based service mesh that can run on every cloud across both Kubernetes and VMs. Prior to 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5, the default kuma-cp config leaks the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. CorsAllowedDomains: [".*"] reflects any Origin, and LocalhostIsAdmin: true promotes requests from 127.0.0.1 to mesh-system:admin. A cross-origin fetch() from a malicious page returns the admin JWT and signing material. This vulnerability is fixed in 2.7.25, 2.9.15, 2.11.13, 2.12.10, and 2.13.5.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:30 UTC
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/kumahq/kuma/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/kumahq/kuma/pull/16416 | x_refsource_MISC |
| https://github.com/kumahq/kuma/pull/16423 | x_refsource_MISC |
| https://github.com/kumahq/kuma/pull/16424 | x_refsource_MISC |
| https://github.com/kumahq/kuma/pull/16425 | x_refsource_MISC |
| https://github.com/kumahq/kuma/pull/16426 | x_refsource_MISC |
| https://github.com/kumahq/kuma/pull/16427 | x_refsource_MISC |
| https://github.com/kumahq/kuma/commit/8fefa8595d4… | x_refsource_MISC |
Impacted products
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"product": "kuma",
"vendor": "kumahq",
"versions": [
{
"status": "affected",
"version": "\u003c 2.7.25"
},
{
"status": "affected",
"version": "\u003e= 2.9.0, \u003c 2.9.15"
},
{
"status": "affected",
"version": "\u003e= 2.11.0, \u003c 2.11.13"
},
{
"status": "affected",
"version": "\u003e= 2.12.0, \u003c 2.12.10"
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}
],
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"cvssV4_0": {
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"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
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},
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"descriptions": [
{
"cweId": "CWE-942",
"description": "CWE-942: Permissive Cross-domain Policy with Untrusted Domains",
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"type": "CWE"
}
]
}
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"url": "https://github.com/kumahq/kuma/pull/16416"
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"tags": [
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},
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"tags": [
"x_refsource_MISC"
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{
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"tags": [
"x_refsource_MISC"
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"tags": [
"x_refsource_MISC"
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"tags": [
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"discovery": "UNKNOWN"
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"title": "Kuma: Default kuma-cp leaks admin token cross-origin via CORS wildcard + LocalhostIsAdmin"
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Mitigation
Architecture and Design
Operation
Strategy: Attack Surface Reduction
Define a restrictive Content Security Policy [REF-1486] or cross-domain policy file.
Mitigation
Architecture and Design
Operation
Strategy: Attack Surface Reduction
Avoid using wildcards in the CSP / cross-domain policy file. Any domain matching the wildcard expression will be implicitly trusted, and can perform two-way interaction with the target server.
Mitigation
Architecture and Design
Operation
Strategy: Environment Hardening
For Flash, modify crossdomain.xml to use meta-policy options such as 'master-only' or 'none' to reduce the possibility of an attacker planting extraneous cross-domain policy files on a server.
No CAPEC attack patterns related to this CWE.