CVE-2026-10086
High
Description
GitLab has remediated an issue in GitLab EE affecting all versions from 16.4 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary client-side code in the context of another user's session, due to improper sanitization of user-supplied input.
SeverityHigh
CVSS8.7
Exploit probability—
Product
Gitlab
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- gitlab gitlab18.11.6, 19.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gitlab gitlab | 16.4.0 ≤ v < 18.11.6, 19.0.0 ≤ v < 19.0.3, 19.1.0 | 18.11.6, 19.0.3 |
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