Vulnerability · Published Jun 11, 2026 · Assigned by GitLab
CVE-2026-10087Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
High 8.7
In plain English
A high-severity cross-site scripting in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)0.3%top 75.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
GitLab has remediated an issue in GitLab EE affecting all versions from 17.1 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary client-side code on behalf of a targeted user due to improper input sanitization in the Analytics Dashboard.
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/601633
- HackerOne Bug Bounty Report #3759090 technical-description, exploit, permissions-required
- https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/