Librechat
CVE-2026-22252
CRITICAL
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as privileged user
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ExploitSend crafted API request to MCP stdio transport
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ImpactExecute arbitrary shell commands as root in container
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization verification
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | LibreChat versions prior to v0.8.2-rc2 with MCP stdio transport enabled. Attacker must possess valid authenticated credentials with high privilege level (PR:H). No input validation on MCP stdio transport command parameters. |
| Impact | CVSS 9.1 (Critical). High privileges per CVSS but any authenticated user can exploit. Network vector, low complexity, scope change. PoC available. EPSS 0.05%. |
| Exploit ScenarioDerived | An authenticated LibreChat user sends an API request specifying an MCP stdio command of '/bin/sh -c "cat /etc/shadow"'. The server executes it as root, returning the system's password hashes. |
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Alert meAnalysisAIv1 – Mar 12, 2026
LibreChat before v0.8.2-rc2 allows any authenticated user to execute shell commands as root inside the container through the MCP stdio transport. A single API request is sufficient for root code execution. PoC available, patch available.
Earlier versions of this analysis (1)
LibreChat MCP stdio transport accepts arbitrary commands without validation, enabling authenticated root RCE in the container.
RemediationAI
Update to v0.8.2-rc2 or later. Implement command allowlists for MCP stdio transport.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The MCP (Model Context Protocol) stdio transport accepts arbitrary command specifications without validation (CWE-285). An authenticated user can specify any shell command through the API, which the server executes as root inside the Docker container.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
LibreChat is a ChatGPT clone with additional features. Prior to v0.8.2-rc2, LibreChat's MCP stdio transport accepts arbitrary commands without validation, allowing any authenticated user to execute shell commands as root inside the container through a single API request. This vulnerability is fixed in v0.8.2-rc2.
Executive ViewAI
Organizations using LibreChat face critical risk from CVE-2026-22252 rated CVSS 9.1. Successful exploitation could critically impact the confidentiality, integrity, and availability of affected systems. Proof-of-concept code is publicly available, increasing the risk of exploitation. A patch is available and should be applied immediately given the critical severity.
Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)GitHub Advisory
A vulnerability in danny-avila/librechat version git 81f2936 allows for path traversal due to improper sanitization of f
An arbitrary file deletion vulnerability exists in danny-avila/librechat version v0.7.5-rc2, specifically within the /ap
LibreChat 0.7.9 lets an authenticated user turn off two-factor authentication on their own account without supplying a v
Stored cross-site scripting and tracker injection in LibreChat 0.8.0 and earlier allow a user who can create a chat to c
LibreChat is a ChatGPT clone with additional features. Rated high severity (CVSS 8.6), this vulnerability is remotely ex
LibreChat 0.8.1-rc2 has SSRF in the Actions feature that allows authenticated users to make the server perform requests
In danny-avila/librechat version git 0c2a583, there is an improper input validation vulnerability. Rated high severity (
A mass assignment vulnerability exists in danny-avila/librechat, affecting all versions. Rated high severity (CVSS 7.5),
Unbounded `key` and `value` parameters on the LibreChat 0.7.9 memory API (`POST /api/memories` and `PATCH /api/memories/
An unhandled exception in the danny-avila/librechat repository, version git 600d217, can cause the server to crash, lead
An improper access control vulnerability (IDOR) exists in the delete attachments functionality of danny-avila/librechat
LibreChat is a ChatGPT clone with additional features. Version 0.8.1-rc2 does not enforce proper access control for file
Exploit-DB