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AI / ML CVE-2026-22252

CRITICAL
Improper Authorization (CWE-285)
2026-01-12 security-advisories@github.com
Authentication Bypass AI / ML Librechat
9.1
CVSS 3.1 · GitHub Advisory
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GitHub Advisory PRIMARY
9.1 CRITICAL
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

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 15, 2026 - 22:46 vuln.today
Public exploit code
Patch released
Jan 15, 2026 - 22:46 nvd
Patch available
CVE Published
Jan 12, 2026 - 19:16 nvd
CRITICAL 9.1

DescriptionGitHub 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.

AnalysisAI

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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as privileged user
Exploit
Send crafted API request to MCP stdio transport
Impact
Execute arbitrary shell commands as root in container
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Vulnerability AssessmentAI

Exploitation LibreChat versions prior to v0.8.2-rc2 with MCP stdio transport enabled. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.1 (Critical). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario 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.
Remediation Update to v0.8.2-rc2 or later. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all affected systems and apply vendor patches immediately. …

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CVE-2026-22252 vulnerability details – vuln.today
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