CVE-2023-5831

Name: CVE-2023-5831
Creator: NVD / NIST
Published: 2023-11-06T11:15:09.81+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2023-5831 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.0 before 16.3.6, all versions starting from 16.4 before 16.4.2, and all versions starting from 16.5.0 before 16.5.1 which have the `super_sidebar_logged_out` feature flag enabled. Affected versions with this default-disabled feature flag enabled may unintentionally disclose GitLab version metadata to unauthorized actors.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.0 before 16.3.6, all versions starting from 16.4 before 16.4.2, and all versions starting from 16.5.0 before 16.5.1 which have the `super_sidebar_logged_out` feature flag enabled. Affected versions with this default-disabled feature flag enabled may unintentionally disclose GitLab version metadata to unauthorized actors.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.46%

36.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-201

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 16.0.0, < 16.3.6
Gitlab	Gitlab	>= 16.4.0, < 16.4.2
Gitlab	Gitlab	16.5.0

References

https://gitlab.com/gitlab-org/gitlab/-/issues/428919Broken Link
https://gitlab.com/gitlab-org/gitlab/-/issues/428919Broken Link

Timeline

Published: Nov 6, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5831?

How severe is CVE-2023-5831?

CVE-2023-5831 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5831?

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-2023-5831?

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

Scan your code now

Source: NVD / NIST