CVE-2026-11345: Improper Authentication Bypass in linqi CDN File Access
An Improper Authentication vulnerability in the /api/Cdn/GetFile endpoint of linqi allows unauthenticated, remote attackers to bypass file access controls. The ValidateAnonFileAccess function incorrectly grants access if an 'AnonFile' query parameter containing exactly 256 characters is provided. While this flaw allows bypassing the intended authorization check, the actual security impact is negligible; the exposed resources are strictly limited to minified JavaScript and CSS files that contain no sensitive data and are already publicly accessible via a standard CDN.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Remove
Remove
linqi /api/Cdn/GetFile AnonFile handlingfrom your environment.If the 'AnonFile' query parameter is not required, remove or disable support for it to eliminate the bypass vector.
- Configuration
Fix the ValidateAnonFileAccess logic so it does not grant access when the 'AnonFile' query parameter contains exactly 256 characters. Implement proper authentication and authorization checks for the /api/Cdn/GetFile endpoint.
linqi /api/Cdn/GetFile (ValidateAnonFileAccess) AnonFile query parameter handling = do not grant access when AnonFile length == 256; perform proper authentication and authorization
Event History
Frequently Asked Questions
What is the severity of CVE-2026-11345?
The severity of CVE-2026-11345 is medium with a CVSS score of 6.9.
How do I fix CVE-2026-11345?
To fix CVE-2026-11345, validate and restrict access to the /api/Cdn/GetFile endpoint and ensure that proper authentication mechanisms are enforced.
What type of vulnerability is CVE-2026-11345?
CVE-2026-11345 is an Improper Authentication vulnerability that allows unauthenticated access to file resources.
Which software is affected by CVE-2026-11345?
The affected software for CVE-2026-11345 is the Linqi application.
What is the impact of CVE-2026-11345?
The impact of CVE-2026-11345 allows remote attackers to bypass file access controls and gain unauthorized access to files.