What’s Vulnerable › Vulnerabilities

CVE-2026-19619: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-28
• Weakness: CWE-79

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an unauthenticated user to execute arbitrary JavaScript in the context of a targeted user's session due to improper sanitization of pasted HTML content in the Content Editor.

Affected products

• GitLab: from 19.0.0 before 19.1.8; from 19.2.0 before 19.2.6; from 19.3.0 before 19.3.2 — fixed in 19.1.8, 19.2.6, 19.3.2

How to fix

Upgrade to a fixed version: GitLab 19.1.8, 19.2.6, 19.3.2. Check the vendor advisory for mitigations.

References

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/
• https://gitlab.com/gitlab-org/gitlab/-/work_items/612792
• https://hackerone.com/reports/3808840

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