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Details of issue NIXPKGS-2026-0847

NIXPKGS-2026-0847
published on
Permalink CVE-2026-31945
7.7 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Changed (C)
  • Confidentiality (C): High (H)
  • Integrity (I): None (N)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Changed (C)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): None (N)
updated 1 month, 3 weeks ago by @mweinelt Activity log
  • Created suggestion 1 month, 3 weeks ago
  • @mweinelt accepted 1 month, 3 weeks ago
  • @mweinelt published on GitHub 1 month, 3 weeks ago
LibreChat Server-Side Request Forgery using DNS resolution

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 products

LibreChat
  • ==>= 0.8.2-rc2, < 0.8.3-rc1

Matching in nixpkgs

pkgs.librechat

Open-source app for all your AI conversations, fully customizable and compatible with any AI provider

Package maintainers

https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f92m-jpv7-55p2