CVE-2026-19619: 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 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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.1.8 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.2.6 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.3.2
Event History
Frequently Asked Questions
Which GitLab releases need to be updated?
Affected releases are all GitLab CE/EE versions from 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2. Update to 19.1.8, 19.2.6, 19.3.2, or a later release in the applicable release line.
What must an attacker do to exploit this issue?
An attacker does not need to be authenticated, but exploitation requires a targeted user to interact with pasted HTML content in the Content Editor under the affected conditions. Successful exploitation can execute arbitrary JavaScript in that user's GitLab session context.
What impact could successful exploitation have?
The issue can expose confidentiality and integrity within the targeted user's session context. The provided severity vector indicates no availability impact.