What’s Vulnerable › Vulnerabilities

CVE-2018-20491

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-30 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in GitLab Enterprise Edition 11.3.x and 11.4.x before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1. It allows XSS.

Affected products

• GitLab: from 11.3.0 before 11.4.13; from 11.5.0 before 11.5.6; from 11.6.0 before 11.6.1 — fixed in 11.4.13, 11.5.6, 11.6.1

How to fix

Upgrade to a fixed version: GitLab 11.4.13, 11.5.6, 11.6.1. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/2018/12/31/security-release-gitlab-11-dot-6-dot-1-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/54008
• https://about.gitlab.com/2018/12/31/security-release-gitlab-11-dot-6-dot-1-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/54008

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