CVE-2026-6335
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
5.4
MEDIUM
CVSS 3.1
EPSS 0.03%
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.
How to fix CVE-2026-6335
To remediate CVE-2026-6335, upgrade the affected package to a fixed version below.
- —upgrade to 18.11.3 or later
Is CVE-2026-6335 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 18.11.0, < 18.11.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |