High [CVE-2026-13320] Arbitrary script execution via improper input sanitization
This high-severity Red Hat Linux advisory covers CVE-2026-13320.
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Summary
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. A flaw was found in GitLab.
This vulnerability allows for the execution of arbitrary scripts within another user's browser session, commonly known as Cross-Site Scripting (XSS). This could lead to unauthorized actions or information disclosure.
Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N). Weakness: CWE-79.
Red Hat lists OpenShift Pipelines; Red Hat OpenShift Container Platform 4 as not affected.
- < 15.7
- < 18.11.7
- < 19.0
- < 19.0.4
- < 19.1
- < 19.1.2
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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