CVE-2019-5464

Name: CVE-2019-5464
Creator: NVD / NIST
Published: 2020-01-28T03:15:10.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.80%

Last modified Jun 17, 2026

CVE-2019-5464 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.80% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.80%

84.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 10.2.0, < 11.11.7

References

https://about.gitlab.com/releases/2019/07/29/security-release-gitlab-12-dot-1-dot-2-released/Patch, Release Notes, Vendor Advisory
https://gitlab.com/gitlab-org/gitlab-ce/issues/63959Exploit, Vendor Advisory
https://hackerone.com/reports/632101Permissions Required
https://about.gitlab.com/releases/2019/07/29/security-release-gitlab-12-dot-1-dot-2-released/Patch, Release Notes, Vendor Advisory
https://gitlab.com/gitlab-org/gitlab-ce/issues/63959Exploit, Vendor Advisory
https://hackerone.com/reports/632101Permissions Required

Timeline

Published: Jan 28, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5464?

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.

How severe is CVE-2019-5464?

CVE-2019-5464 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.80% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5464?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5464?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST