What’s Vulnerable › Vulnerabilities

CVE-2018-18643

• Severity: medium (CVSS 6.1 v3.0)
• 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: 2019-04-25 · updated 2026-06-17
• Weakness: CWE-79

Description

GitLab CE & EE 11.2 and later and before 11.5.0-rc12, 11.4.6, and 11.3.10 have Persistent XSS.

Affected products

• GitLab: through 11.2.0; from 11.3.0 before 11.3.10; from 11.4.0 before 11.4.6; from 11.4.7 through 11.4.9; 11.5.0, 11.5.0-rc1, 11.5.0-rc10, 11.5.0-rc11, 11.5.0-rc2, 11.5.0-rc3 (+6) — fixed in 11.3.10, 11.4.6

How to fix

Upgrade to a fixed version: GitLab 11.3.10, 11.4.6. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/2018/11/19/critical-security-release-gitlab-11-dot-4-dot-6-released/
• https://about.gitlab.com/blog/categories/releases/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/53385
• https://about.gitlab.com/2018/11/19/critical-security-release-gitlab-11-dot-4-dot-6-released/
• https://about.gitlab.com/blog/categories/releases/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/53385

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