CVE-2026-6896

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 EE affecting all versions from 13.11 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 with developer-role permissions 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 #3682085
https://hackerone.com/reports/3682085

Scores

CVSS v3 8.7
EPSS 0.0028
EPSS Percentile 20.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/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 13.11 - 18.11.7
gitlab/gitlab 13.11.0 - 18.11.7
GitLab/GitLab 19.0 - 19.0.4
GitLab/GitLab 19.1 - 19.1.2
Published Jul 08, 2026
Tracked Since Jul 09, 2026