Server-Side Request Forgery (SSRF) Affecting librechat package, versions <0.8.1-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.06% (18th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LIBRECHAT-14888578
  • published7 Jan 2026
  • disclosed29 Nov 2025

Introduced: 29 Nov 2025

CVE-2025-66201  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Chainguard librechat to version 0.8.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream librechat package and not the librechat package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

LibreChat is a ChatGPT clone with additional features. Prior to version 0.8.1-rc2, LibreChat is vulnerable to Server-side Request Forgery (SSRF), by passing specially crafted OpenAPI specs to its "Actions" feature and making the LLM use those actions. It could be used by an authenticated user with access to this feature to access URLs only accessible to the LibreChat server (such as cloud metadata services, through which impersonation of the server might be possible). This issue has been patched in version 0.8.1-rc2.

CVSS Base Scores

version 3.1