CVE-2025-4979

Name: CVE-2025-4979
Creator: NVD / NIST
Published: 2025-05-22T14:16:08.617+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2025-4979 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue has been discovered in GitLab CE/EE affecting all versions before 17.10.7, 17.11 before 17.11.3, and 18.0 before 18.0.1. An attacker may be able to reveal masked or hidden CI variables (that they did not author) in the WebUI, by simply creating their own variable and observing the HTTP response.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

An issue has been discovered in GitLab CE/EE affecting all versions before 17.10.7, 17.11 before 17.11.3, and 18.0 before 18.0.1. An attacker may be able to reveal masked or hidden CI variables (that they did not author) in the WebUI, by simply creating their own variable and observing the HTTP response.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.37%

29.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1220

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	< 17.10.7
Gitlab	Gitlab	>= 17.11.0, < 17.11.3
Gitlab	Gitlab	18.0.0

References

https://gitlab.com/gitlab-org/gitlab/-/issues/524455Broken Link

Timeline

Published: May 22, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-4979?

How severe is CVE-2025-4979?

CVE-2025-4979 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2025-4979?

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-2025-4979?

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

Scan your code now

Source: NVD / NIST