CVEvulnerability

CVE-2026-31945

7.7 HIGH Published 2026-03-27 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-03-27
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-918

Description

LibreChat is a ChatGPT clone with additional features. Versions 0.8.2-rc2 through 0.8.2 are vulnerable to a server-side request forgery (SSRF) attack when using agent actions or MCP. Although a previous SSRF vulnerability (https://github.com/danny-avila/LibreChat/security/advisories/GHSA-rgjq-4q58-m3q8) was reported and patched, the fix only introduced hostname validation. It does not verify whether DNS resolution results in a private IP address. As a result, an attacker can still bypass the protection and gain access to internal resources, such as an internal RAG API or cloud instance metadata endpoints. Version 0.8.3-rc1 contains a patch.

Affected configurations

• librechat librechat 0.8.2

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References