CVE-2023-5933

MEDIUM 6.4

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab

CVSS Score

6.4

EPSS Score

3.8%

EPSS Percentile

88th

An issue has been discovered in GitLab CE/EE affecting all versions after 13.7 before 16.6.6, 16.7 prior to 16.7.4, and 16.8 prior to 16.8.1. Improper input sanitization of user name allows arbitrary API PUT requests.

CWE	CWE-80
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Jan 26, 2024
Last Updated	Apr 25, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

GitLab / GitLab

13.7 < 16.6.6 16.7 < 16.7.4 16.8 < 16.8.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

about.gitlab.com: https://about.gitlab.com/releases/2024/01/25/critical-security-release-gitlab-16-8-1-released/ gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/issues/430236 hackerone.com: https://hackerone.com/reports/2225710

Credits

Thanks [yvvdwf](https://hackerone.com/yvvdwf) for reporting this vulnerability through our HackerOne bug bounty program