LibreChat has Insufficient Access Control for Agent Files
Priority LOW 31CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00335 27th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed LibreChat (danny-avila): 0.8.2-rc2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| danny-avila | LibreChat | 0.8.1-rc2 to before 0.8.2-rc2 | 0.8.2-rc2 | Patch available | CNA |
- LibreChat Vendordanny-avila Affected 0.8.1-rc2 to before 0.8.2-rc2 Fixed in 0.8.2-rc2 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:librechat:librechat:0.8.1:-:*:*:*:*:*:* | 0.8.1 | Vulnerable | danny-avila |
| cpe:2.3:a:librechat:librechat:0.8.1:rc1:*:*:*:*:*:* | 0.8.1 rc1 | Vulnerable | danny-avila |
- cpe:2.3:a:librechat:librechat:0.8.1:-:*:*:*:*:*:* Versions 0.8.1 Vulnerable ·danny-avila
- cpe:2.3:a:librechat:librechat:0.8.1:rc1:*:*:*:*:*:* Versions 0.8.1 rc1 Vulnerable ·danny-avila
Remediation
- Fix · CNA LibreChat (danny-avila) Fixed in 0.8.2-rc2
Timeline
- 2026-10-02 Threatist record created from CVE-2025-69220
References
Other 6
- https://cwe.mitre.org/data/definitions/284.html
- https://cwe.mitre.org/data/definitions/862.html
- https://github.com/danny-avila/LibreChat/releases/tag/v0.8.2-rc2
- 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
More danny-avila Librechat vulnerabilities
- TI-2026-25134 LibreChat Exfiltrates Server Secrets via MCP Server URL Injection CVSS 3.1CRITICAL 9.6
- TI-2026-17862 LibreChat MCP Stdio Remote Command Execution CVSS 3.1CRITICAL 9.9
- TI-2026-38976 LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow CVSS 3.1CRITICAL 9.3
- TI-2024-27763 LibreChat through 0.7.4-rc1 has incorrect access control for message updates. CVSS 3.1CRITICAL 9.8
- TI-2024-10347 Path Traversal in danny-avila/librechat CVSS 3.0HIGH 8.8
- TI-2026-25682 In LibreChat 0.8.1-rc2, a logged-in user obtains a JWT for both the LibreChat API and the RAG API. CVSS 3.1CRITICAL 9.0
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences