What is CVE-2026-22252?

CVE-2026-22252 is a critical-severity vulnerability in Danny-Avila Librechat, classified under Improper Authorization. CVSS score: 9.1/10. Published 2026-01-12.

How severe is CVE-2026-22252?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Danny-Avila Librechat

CVE-2026-22252

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.

Published 2026-01-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.041 (90.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.037 · newest: 0.041 · change: +0.004

Affected products

Danny-Avila Librechat — versions < v0.8.2-rc2
Librechat — versions 0.8.2

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

github.com/danny-avila/LibreChat/security/advisories/GHSA-cxhj-j78r-p88f (Exploit, Vendor Advisory)
github.com/danny-avila/LibreChat/commit/211b39f3113d4e6ecab84be0a83f4e9c9dea127f (Patch)

Frequently asked questions

What is CVE-2026-22252?: CVE-2026-22252 is a critical-severity vulnerability in Danny-Avila Librechat, classified under Improper Authorization. CVSS score: 9.1/10. Published 2026-01-12.
How severe is CVE-2026-22252?: Critical severity. CVSS v3 base score is 9.1 out of 10.