CVE-2026-5262

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.

CVSS v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
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/595332	Broken Link
https://hackerone.com/reports/3574642	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:18.11.0::::community:::
	cpe:2.3:a:gitlab:gitlab:18.11.0::::enterprise:::

History

23 Apr 2026, 20:38

Type	Values Removed	Values Added
References	~~() https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/ -~~	() https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/ - Release Notes, Vendor Advisory
References	~~() https://gitlab.com/gitlab-org/gitlab/-/work_items/595332 -~~	() https://gitlab.com/gitlab-org/gitlab/-/work_items/595332 - Broken Link
References	~~() https://hackerone.com/reports/3574642 -~~	() https://hackerone.com/reports/3574642 - Permissions Required
CPE		cpe:2.3:a:gitlab:gitlab:::::enterprise:::* cpe:2.3:a:gitlab:gitlab:18.11.0::::enterprise::: cpe:2.3:a:gitlab:gitlab:::::community:::* cpe:2.3:a:gitlab:gitlab:18.11.0::::community:::
First Time		Gitlab Gitlab gitlab

22 Apr 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-22 17:16

Updated : 2026-04-23 20:38

NVD link : CVE-2026-5262

Mitre link : CVE-2026-5262

CVE.ORG link : CVE-2026-5262

JSON object : View

Products Affected

gitlab

gitlab

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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