CVE-2023-3906

Name: CVE-2023-3906
Creator: NVD / NIST
Published: 2023-09-29T07:15:13.233+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.5/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2023-3906 is a low-severity vulnerability rated 3.5/10 on the CVSS scale. An input validation issue in the asset proxy in GitLab EE, affecting all versions from 12.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1, allowed an authenticated attacker to craft image urls which bypass the asset proxy.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

An input validation issue in the asset proxy in GitLab EE, affecting all versions from 12.3 prior to 16.2.8, 16.3 prior to 16.3.5, and 16.4 prior to 16.4.1, allowed an authenticated attacker to craft image urls which bypass the asset proxy.

Metrics

CVSS 3.1

3.5/10

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

EPSS Probability

0.48%

37.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1287

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 12.3, < 16.2.8
Gitlab	Gitlab	>= 16.3.0, < 16.3.5
Gitlab	Gitlab	16.4.0

References

https://gitlab.com/gitlab-org/gitlab/-/issues/419213Issue Tracking, Vendor Advisory
https://hackerone.com/reports/2071411Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/issues/419213Issue Tracking, Vendor Advisory
https://hackerone.com/reports/2071411Permissions Required

Timeline

Published: Sep 29, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-3906?

How severe is CVE-2023-3906?

CVE-2023-3906 has a CVSS score of 3.5/10 (LOW severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3906?

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-2023-3906?

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

Scan your code now

Source: NVD / NIST