What’s Vulnerable › Vulnerabilities

CVE-2019-5464

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-01-28 · updated 2026-06-17
• Weakness: CWE-20

Description

A flawed DNS rebinding protection issue was discovered in GitLab CE/EE 10.2 and later in the `url_blocker.rb` which could result in SSRF where the library is utilized.

Affected products

• GitLab: from 10.2.0 before 11.11.7 — fixed in 11.11.7

How to fix

Upgrade to a fixed version: GitLab 11.11.7. Check the vendor advisory for mitigations.

References

• https://about.gitlab.com/releases/2019/07/29/security-release-gitlab-12-dot-1-dot-2-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/63959
• https://hackerone.com/reports/632101
• https://about.gitlab.com/releases/2019/07/29/security-release-gitlab-12-dot-1-dot-2-released/
• https://gitlab.com/gitlab-org/gitlab-ce/issues/63959
• https://hackerone.com/reports/632101

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