CVE-2026-5262

HIGH

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

Title source: cna
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 8.0
EPSS 0.0022
EPSS Percentile 12.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (5)
gitlab/gitlab 18.11.0 (2 CPE variants)
GitLab/GitLab 16.1.0 - 18.9.6
gitlab/gitlab 16.1.0 - 18.9.6 (2 CPE variants)
GitLab/GitLab 18.10 - 18.10.4
GitLab/GitLab 18.11 - 18.11.1
Published Apr 22, 2026
Tracked Since Apr 22, 2026