CVE-2026-13320

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 15.7 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2 that under certain conditions could have allowed an authenticated user to execute arbitrary scripts in another user's browser session due to improper sanitization of user-supplied input.

References (3)

Core 3
Core References
Exploit technical-description exploit permissions-required
HackerOne Bug Bounty Report #3816917
https://hackerone.com/reports/3816917

Scores

CVSS v3 7.3
EPSS 0.0024
EPSS Percentile 15.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/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 (4)
GitLab/GitLab 15.7 - 18.11.7
gitlab/gitlab 15.7.0 - 18.11.7 (2 CPE variants)
GitLab/GitLab 19.0 - 19.0.4
GitLab/GitLab 19.1 - 19.1.2
Published Jul 08, 2026
Tracked Since Jul 09, 2026