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VulnerabilityPublished

CVE-2026-54033: danny-avila LibreChat · Server-Side Request Forgery (SSRF)

Affects danny-avila LibreChatSource CVE Database V5

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Not known to be exploited · CVSS 7.7 High : upgrade to 0.8.4-rc1 soon.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 3.1 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.8.4-rc1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Upgrade danny-avila LibreChat to 0.8.4-rc1.

Affected software

ProductAffectedFixed in
danny-avilaLibreChatAffected
  • <0.8.4-rc1
Fixed in
  • 0.8.4-rc1
GitHubdanny-avila/LibreChatpkg:github/danny-avila/LibreChatOther threatsAffected
  • =0.8.4-rc1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade LibreChat to version 0.8.4-rc1 or later, where this SSRF vulnerability is fixed.

Description

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.

References

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