CVE-2026-10086: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
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.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2026-10086?
CVE-2026-10086 has a high severity rating of 8.7.
How do I fix CVE-2026-10086?
To remediate CVE-2026-10086, upgrade to GitLab versions 18.11.6, 19.0.3, or 19.1.1 or newer.
What types of attacks are possible with CVE-2026-10086?
CVE-2026-10086 allows an authenticated user with developer-role permissions to execute arbitrary client-side code, leading to potential Cross-site Scripting (XSS) attacks.
Which versions of GitLab are affected by CVE-2026-10086?
CVE-2026-10086 affects GitLab EE versions prior to 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1.
Who is at risk from CVE-2026-10086?
Authenticated users with developer-role permissions in GitLab are at risk due to CVE-2026-10086.