CVE-2026-6335

MEDIUM

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 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user to execute arbitrary code in another user's browser session due to improper sanitization.

References (3)

Core 3

Scores

CVSS v3 5.4
EPSS 0.0003
EPSS Percentile 9.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (2)
GitLab/GitLab 18.11 - 18.11.3
gitlab/gitlab 18.11.0 - 18.11.3 (2 CPE variants)
Published May 14, 2026
Tracked Since May 14, 2026