Common Weakness Enumeration

CWE-942

Allowed

Permissive 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.

177 vulnerabilities reference this CWE, most recent first.

CVE-2026-6662 (GCVE-0-2026-6662)

Vulnerability from cvelistv5 – Published: 2026-04-20 17:00 – Updated: 2026-04-20 18:09
VLAI
Title
ericc-ch copilot-api Token Endpoint server.ts cors cross-domain policy
Summary
A vulnerability was found in ericc-ch copilot-api up to 0.7.0. The impacted element is the function cors of the file src/server.ts of the component Token Endpoint. Performing a manipulation results in permissive cross-domain policy with untrusted domains. It is possible to initiate the attack remotely. The exploit has been made public and could be used.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
  • CWE-346 - Origin Validation Error
Assigner
References
URL Tags
https://vuldb.com/vuln/358300 vdb-entrytechnical-description
https://vuldb.com/vuln/358300/cti signaturepermissions-required
https://vuldb.com/submit/794601 third-party-advisory
https://github.com/August829/CVEP/issues/31 exploitissue-tracking
Impacted products
Vendor Product Version
ericc-ch copilot-api Affected: 0.1
Affected: 0.2
Affected: 0.3
Affected: 0.4
Affected: 0.5
Affected: 0.6
Affected: 0.7.0
Create a notification for this product.
Credits
Yu_Bao (VulDB User)
Show details on NVD website

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CVE-2026-6143 (GCVE-0-2026-6143)

Vulnerability from cvelistv5 – Published: 2026-04-13 01:15 – Updated: 2026-04-13 11:59
VLAI
Title
farion1231 cc-switch ProxyServer server.rs cross-domain policy
Summary
A security flaw has been discovered in farion1231 cc-switch up to 3.12.3. Affected by this issue is some unknown functionality of the file src-tauri/src/proxy/server.rs of the component ProxyServer. The manipulation results in permissive cross-domain policy with untrusted domains. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
  • CWE-346 - Origin Validation Error
Assigner
Impacted products
Vendor Product Version
farion1231 cc-switch Affected: 3.12.0
Affected: 3.12.1
Affected: 3.12.2
Affected: 3.12.3
Create a notification for this product.
Credits
r00tuser (VulDB User)
Show details on NVD website

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CVE-2026-5321 (GCVE-0-2026-5321)

Vulnerability from cvelistv5 – Published: 2026-04-02 04:45 – Updated: 2026-04-02 18:30
VLAI
Title
vanna-ai vanna FastAPI/Flask Server cross-domain policy
Summary
A flaw has been found in vanna-ai vanna up to 2.0.2. Affected by this issue is some unknown functionality of the component FastAPI/Flask Server. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
  • CWE-346 - Origin Validation Error
Assigner
References
URL Tags
https://vuldb.com/vuln/354653 vdb-entry
https://vuldb.com/vuln/354653/cti signaturepermissions-required
https://vuldb.com/submit/780729 third-party-advisory
https://github.com/August829/CVEP/issues/14 exploitissue-tracking
Impacted products
Vendor Product Version
vanna-ai vanna Affected: 2.0.0
Affected: 2.0.1
Affected: 2.0.2
Create a notification for this product.
Credits
Yu_Bao (VulDB User) VulDB
Show details on NVD website

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CVE-2026-5302 (GCVE-0-2026-5302)

Vulnerability from cvelistv5 – Published: 2026-04-08 12:05 – Updated: 2026-04-08 14:10
VLAI
Title
Permissive Cross-domain Policy with Untrusted Domains in coolercontrold
Summary
CORS misconfiguration in CoolerControl/coolercontrold <4.0.0 allows unauthenticated remote attackers to read data and send commands to the service via malicious websites
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
Impacted products
Vendor Product Version
CoolerControl coolercontrold Affected: 2.0.0 , < 4.0.0 (semver)
Create a notification for this product.
Credits
https://gitlab.com/lassi-3
Show details on NVD website

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CVE-2026-1181 (GCVE-0-2026-1181)

Vulnerability from cvelistv5 – Published: 2026-01-19 12:00 – Updated: 2026-01-26 21:20
VLAI
Title
Altium 365 Over-Permissive CORS Configuration Allows Credentialed Cross-Origin Workspace Access
Summary
Altium 365 workspace endpoints were configured with an overly permissive Cross-Origin Resource Sharing (CORS) policy that allowed credentialed cross-origin requests from other Altium-controlled subdomains, including forum.live.altium.com. As a result, JavaScript executing on those origins could access authenticated workspace APIs in the context of a logged-in user. When chained with vulnerabilities in those external applications, this misconfiguration enables unauthorized access to workspace data, administrative actions, and bypass of IP allowlisting controls, including in GovCloud environments.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - – Permissive Cross-domain Policy with Untrusted Domains
  • CWE-284 - Improper Access Control
Assigner
Impacted products
Vendor Product Version
Altium Altium 365 Affected: unspecified (semver)
Create a notification for this product.
Date Public
2026-01-15 22:48
Show details on NVD website

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CVE-2025-62523 (GCVE-0-2025-62523)

Vulnerability from cvelistv5 – Published: 2025-10-27 20:10 – Updated: 2025-10-27 20:38
VLAI
Title
PILOS Misconfigured the Access-Control-Allow-Origin Header
Summary
PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. PILOS before 4.8.0 includes a Cross-Origin Resource Sharing (CORS) misconfiguration in its middleware: it reflects the Origin request header back in the Access-Control-Allow-Origin response header without proper validation or a whitelist, while Access-Control-Allow-Credentials is set to true. This behavior could allow a malicious website on a different origin to send requests (including credentials) to the PILOS API. This may enable exfiltration or actions using the victim’s credentials if the server accepts those cross-origin requests as authenticated. Laravel’s session handling applies additional origin checks such that cross-origin requests are not authenticated by default. Because of these session-origin protections, and in the absence of any other unknown vulnerabilities that would bypass Laravel’s origin/session checks, this reflected-Origin CORS misconfiguration is not believed to be exploitable in typical PILOS deployments. This vulnerability has been patched in PILOS in v4.8.0
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
Impacted products
Vendor Product Version
THM-Health PILOS Affected: < 4.8.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-57755 (GCVE-0-2025-57755)

Vulnerability from cvelistv5 – Published: 2025-08-21 16:21 – Updated: 2025-08-21 17:31
VLAI
Title
claude-code-router CORS. misconfiguration
Summary
claude-code-router is a powerful tool to route Claude Code requests to different models and customize any request. Due to improper Cross-Origin Resource Sharing (CORS) configuration, there is a risk that user API Keys or equivalent credentials may be exposed to untrusted domains. Attackers could exploit this misconfiguration to steal credentials, abuse accounts, exhaust quotas, or access sensitive data. The issue has been patched in v1.0.34.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
Impacted products
Show details on NVD website

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CVE-2025-55274 (GCVE-0-2025-55274)

Vulnerability from cvelistv5 – Published: 2026-03-26 12:47 – Updated: 2026-03-26 15:02
VLAI
Title
HCL Aftermarket DPC is affected by Cross-Origin Resource Sharing vulnerability
Summary
HCL Aftermarket DPC is affected by Cross-Origin Resource Sharing vulnerability. CORS misconfigurations includes the exposure of sensitive user information to attackers, unauthorized access to APIs, and possible data manipulation or leakage. If an attacker to exploit CORS misconfiguration, they could steal sensitive data, perform actions on behalf of a legitimate user.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Security Policy with Untrusted Domains
Assigner
HCL
Impacted products
Vendor Product Version
HCL Aftermarket DPC Affected: version 1.0.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-53092 (GCVE-0-2025-53092)

Vulnerability from cvelistv5 – Published: 2025-10-16 16:29 – Updated: 2025-10-16 18:13
VLAI
Title
Strapi core vulnerable to sensitive data exposure via CORS misconfiguration
Summary
Strapi is an open source headless content management system. Strapi versions prior to 5.20.0 contain a CORS misconfiguration vulnerability in default installations. By default, Strapi reflects the value of the Origin header back in the Access-Control-Allow-Origin response header without proper validation or whitelisting. This allows an attacker-controlled site to send credentialed requests to the Strapi backend. An attacker can exploit this by hosting a malicious site on a different origin (e.g., different port) and sending requests with credentials to the Strapi API. The vulnerability is fixed in version 5.20.0. No known workarounds exist.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-284 - Improper Access Control
  • CWE-364 - Signal Handler Race Condition
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
Impacted products
Vendor Product Version
strapi strapi Affected: < 5.20.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-41366 (GCVE-0-2025-41366)

Vulnerability from cvelistv5 – Published: 2025-06-06 11:50 – Updated: 2025-06-06 12:51
VLAI
Title
CORS vulnerability in IDF and ZLF
Summary
In IDF v0.10.0-0C03-03 and ZLF v0.10.0-0C03-04, a configuration error has been detected in cross-origin resource sharing (CORS). Exploiting this vulnerability requires authenticating to the device and executing certain commands that can only be executed with permissions higher than the view permission.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
Impacted products
Vendor Product Version
ZIV IDF and ZLF Affected: 0 , < 1.1.0 (custom)
Create a notification for this product.
Date Public
2025-06-05 10:00
Credits
Aarón Flecha Menéndez Gabriel Vía Echezarreta
Show details on NVD website

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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.