CVE-2026-5262CWE-79

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

High · published April 22, 2026

CVSS v3.1
8.0
EPSS
0%
Percentile
28.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.0 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00355 · 28.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-04-22T16:04Z
EPSS history
Timeline
  • 22 APR 16:04Z
    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
    cvelistv5