What’s Vulnerable › Vulnerabilities

CVE-2019-15739

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-16 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in GitLab Community and Enterprise Edition 8.1 through 12.2.1. Certain areas displaying Markdown were not properly sanitizing some XSS payloads.

Affected products

• GitLab: from 8.1.0 before 12.0.8; from 12.1.0 before 12.1.8; from 12.2.0 before 12.2.3 — fixed in 12.0.8, 12.1.8, 12.2.3

How to fix

Upgrade to a fixed version: GitLab 12.0.8, 12.1.8, 12.2.3. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/2019/08/29/security-release-gitlab-12-dot-2-dot-3-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/64033
• https://about.gitlab.com/2019/08/29/security-release-gitlab-12-dot-2-dot-3-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/64033

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