CVE-2018-17452

Name: CVE-2018-17452
Creator: NVD / NIST
Published: 2023-04-15T23:15:13.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2018-17452 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in GitLab Community and Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. There is Server-Side Request Forgery (SSRF) via a loopback address to the validate_localhost function in url_blocker.rb.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

An issue was discovered in GitLab Community and Enterprise Edition before 11.1.7, 11.2.x before 11.2.4, and 11.3.x before 11.3.1. There is Server-Side Request Forgery (SSRF) via a loopback address to the validate_localhost function in url_blocker.rb.

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

0.74%

49.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	< 11.1.7
Gitlab	Gitlab	>= 11.2.0, < 11.2.4
Gitlab	Gitlab	11.3.0

References

https://about.gitlab.com/blog/categories/releases/Release Notes
https://about.gitlab.com/releases/2018/10/01/security-release-gitlab-11-dot-3-dot-1-released/Release Notes, Vendor Advisory
https://about.gitlab.com/blog/categories/releases/Release Notes
https://about.gitlab.com/releases/2018/10/01/security-release-gitlab-11-dot-3-dot-1-released/Release Notes, Vendor Advisory

Timeline

Published: Apr 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-17452?

How severe is CVE-2018-17452?

CVE-2018-17452 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2018-17452?

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-2018-17452?

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

Scan your code now

Source: NVD / NIST