CVE-2026-13320: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 18.11.7 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.0.4 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.1.2
Event History
Frequently Asked Questions
What is the severity of CVE-2026-13320?
The severity of CVE-2026-13320 is categorized as high with a score of 7.3.
How do I fix CVE-2026-13320?
To fix CVE-2026-13320, upgrade GitLab to version 18.11.7, 19.0.4, or 19.1.2 or later.
What type of vulnerability is CVE-2026-13320?
CVE-2026-13320 is classified as a Cross-Site Scripting (XSS) vulnerability.
Who is affected by CVE-2026-13320?
CVE-2026-13320 affects authenticated users of GitLab CE/EE versions from 15.7 before 18.11.7, 19.0 before 19.0.4, and 19.1 before 19.1.2.
What can be exploited in CVE-2026-13320?
CVE-2026-13320 can allow an authenticated user to execute arbitrary scripts in another user's browser session due to improper input sanitization.