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Vulnerabilities

Security fix · CVE-2026-44653

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers.

Published Jun 2, 2026 · catalog updated Jul 21, 2026 · LibreChat is an enhanced

Check if you run it

No confirmed exploitation is on record for CVE-2026-44653. EPSS is 0.39%. Act only if a listed version of LibreChat is an enhanced is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (LibreChat is an enhanced).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.39%
Remediation
Version ranges on file
Affected products
cpe librechat/librechat · stated librechat

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, users with only access to an MCP server can retrieve the server's decrypted admin-managed secrets through and . The returned config includes plaintext values for and . This allows viewers of a shared MCP server to exfiltrate the underlying provider credentials. Version 0.8..4 contains a patch. Other remediations include: never returning decrypted admin-managed secrets to non-owners; redacting apiKey.key and oauth.client_secret from all API responses consider returning only boolean presence indicators for secrets, similar to the auth-values route pattern; and, if owners need to edit configs without re-entering secrets, preserving secrets server-side and returning placeholders instead of plaintext.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe librechat/librechatversion unspecified
  • stated librechat<= 0.8.3

How to fix CVE-2026-44653

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-44653. EPSS is 0.39%. Act only if a listed version of LibreChat is an enhanced is installed.

Which versions are affected?

Compare what you have installed with <= 0.8.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-201. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 2, 2026 · NIST NVD

    Detected

    LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, users with only access to an MCP server can retrieve the server's decrypted admin-managed secrets through and . The returned config includes plaintext values for and . This allows viewers of a shared MCP server to exfiltrate the underlying provider credentials. Version 0.8..4 contains

  2. Jul 21, 2026 · NIST NVD

    Updated

    LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, users with only access to an MCP server can retrieve the server's decrypted admin-managed secrets through and . The returned config includes plaintext values for and . This allows viewers of a shared MCP server to exfiltrate the underlying provider credentials. Version 0.8..4 contains

Sources

  • CVE.orgVulnerability recordCVE-2026-44653

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-44653

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-44653

    LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, users with only access to an MCP server can retrieve the server's decrypted admin-managed secrets through and `GET /api/mcp/servers/:se

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.