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VulnerabilityPublished

CVE-2026-54037: danny-avila LibreChat · Unthrottled Resource Allocation

Affects danny-avila LibreChatSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 6.5 Medium : upgrade to 0.8.4-rc1 when convenient.

Data as of 8 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 43% 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:U/C:N/I:N/A:H

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

AI-suggested

Upgrade LibreChat to version 0.8.4-rc1 or later, where the vulnerability is fixed by adding appropriate rate limiting to the /api/convos/duplicate endpoint. Patch status is confirmed by the vendor fix in 0.8.4-rc1.

Description

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the fix for CVE-2025-7105 added forkIpLimiter and forkUserLimiter rate limiters to POST /api/convos/fork to prevent rapid-fire conversation duplication. However, the POST /api/convos/duplicate endpoint — which is in the same file and performs the exact same expensive database operations — was not given any rate limiter. An authenticated user can bypass the CVE-2025-7105 fix by using /duplicate instead of /fork to exhaust server resources. This vulnerability is fixed in 0.8.4-rc1.

References

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