CVE-2026-54033

Name: CVE-2026-54033
Creator: NVD / NIST
Published: 2026-06-25T17:16:40.783+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 0.20%

Last modified Jun 25, 2026

CVE-2026-54033 is a high-severity vulnerability rated 7.7/10 on the CVSS scale. 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. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.7/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS Probability

0.20%

10.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

References

Timeline

Published: Jun 25, 2026
Last Modified: Jun 25, 2026
Status: Undergoing Analysis

Frequently Asked Questions

What is CVE-2026-54033?

How severe is CVE-2026-54033?

CVE-2026-54033 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2026-54033?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-54033?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST