CVE-2023-6371

Public Exploit
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Description

An issue has been discovered in GitLab CE/EE affecting all versions before 16.8.5, all versions starting from 16.9 before 16.9.3, all versions starting from 16.10 before 16.10.1. A wiki page with a crafted payload may lead to a Stored XSS, allowing attackers to perform arbitrary actions on behalf of victims.

Remediation

Solution:

  • Upgrade to versions 16.10.1, 16.9.3, 16.8.5 or above.

Category

8.7
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/433021 issue tracking exploit
https://hackerone.com/reports/2257080 issue tracking technical description exploit

Frequently Asked Questions

What is the severity of CVE-2023-6371?
CVE-2023-6371 has been scored as a high severity vulnerability.
How to fix CVE-2023-6371?
To fix CVE-2023-6371: Upgrade to versions 16.10.1, 16.9.3, 16.8.5 or above.
Is CVE-2023-6371 being actively exploited in the wild?
It is possible that CVE-2023-6371 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6371?
CVE-2023-6371 affects GitLab GitLab.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.