CVE-2026-22252

LibreChat MCP Stdio Remote Command Execution

CVSS 9.1 CRITICALEPSS 3.7%CWE-285

Vexday Risk Score

28Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 9.1EPSS 3.7%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

12 jan 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Produtos afetados

danny-avila · LibreChat

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Referências

https://github.com/danny-avila/LibreChat/commit/211b39f3113d4e6ecab84be0a83f4e9c9dea127f https://github.com/danny-avila/LibreChat/security/advisories/GHSA-cxhj-j78r-p88f