CVE-2025-69220: LibreChat has Insufficient Access Control for Agent Files

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-07 · updated 2026-10-07
Weakness: CWE-284

Description

LibreChat is a ChatGPT clone with additional features. Version 0.8.1-rc2 does not enforce proper access control for file uploads to an agents file context and file search. An authenticated attacker with access to the agent ID can change the behavior of arbitrary agents by uploading new files to the file context or file search, even if they have no permissions for this agent. This issue is fixed in version 0.8.2-rc2.

Affected products

danny-avila LibreChat: 0.8.1, 0.8.1-rc1

References

https://cwe.mitre.org/data/definitions/284.html
https://cwe.mitre.org/data/definitions/862.html
https://github.com/danny-avila/LibreChat/commit/4b9c6ab1cb9de626736de700c7981f38be08d237
https://github.com/danny-avila/LibreChat/releases/tag/v0.8.2-rc2
https://github.com/danny-avila/LibreChat/security/advisories/GHSA-xcmf-rpmh-hg59
https://owasp.org/Top10/A01_2021-Broken_Access_Control
https://owasp.org/www-project-web-security-testing-guide/v42/4-Web_Application_Security_Testing/05-Authorization_Testing/02-Testing_for_Bypassing_Authorization_Schema.html
https://raw.githubusercontent.com/OWASP/ASVS/v5.0.0/5.0/OWASP_Application_Security_Verification_Standard_5.0.0_en.pdf

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