CVE-2025-6454

Name: CVE-2025-6454
Creator: NVD / NIST
Published: 2025-09-12T06:15:42.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2025-6454 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue has been discovered in GitLab CE/EE affecting all versions from 16.11 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed authenticated users to make unintended internal requests through proxy environments by injecting crafted sequences.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 16.11 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed authenticated users to make unintended internal requests through proxy environments by injecting crafted sequences.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.65%

46.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 16.11.0, < 18.1.6
Gitlab	Gitlab	>= 18.2.0, < 18.2.6
Gitlab	Gitlab	>= 18.3.0, < 18.3.2

References

https://about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/Release Notes, Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/550766Broken Link
https://hackerone.com/reports/3162711Permissions Required

Timeline

Published: Sep 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-6454?

How severe is CVE-2025-6454?

CVE-2025-6454 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2025-6454?

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-2025-6454?

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

Scan your code now

Source: NVD / NIST