CVE-2026-5262

Name: CVE-2026-5262
Creator: NVD / NIST
Published: 2026-04-22T17:16:44.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2026-5262 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.1.0 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an unauthenticated user to access tokens in the Storybook development environment due to improper input validation.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.1.0 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an unauthenticated user to access tokens in the Storybook development environment due to improper input validation.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.22%

12.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 16.1.0, < 18.9.6
Gitlab	Gitlab	>= 18.10.0, < 18.10.4
Gitlab	Gitlab	18.11.0

References

https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/Release Notes, Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/595332Broken Link
https://hackerone.com/reports/3574642Permissions Required

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5262?

How severe is CVE-2026-5262?

CVE-2026-5262 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5262?

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-2026-5262?

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

Scan your code now

Source: NVD / NIST