by Kastro
Paper/Archive/CVE-2026-22252

CVE-2026-22252

danny-avila LibreChat — LibreChat MCP Stdio Remote Command Execution

EPSS 4%public exploitCVSS 9.9
critical.is priorityof 100
58
CVSS 9.9 (NVD)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 91.0.910 × 2018.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
LibreChat< v0.8.2-rc2–CNA

Scores by source

NVD9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refgithub.com/danny-avila/LibreChat/security/advisories/GHSA-cxhj-j78r-p88frefgithub.com/danny-avila/LibreChat/commit/211b39f3113d4e6ecab84be0a83f4e9c9dea127f