CVE-2023-3500

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 starting from 10.0 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A reflected XSS was possible when creating specific PlantUML diagrams that allowed the attacker to perform arbitrary actions on behalf of victims.

Remediation

Solution:

  • Upgrade to versions 16.2.2, 16.1.3, 16.0.8 or above.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.27%
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/416902 issue tracking broken link permissions required
https://hackerone.com/reports/2010926 broken link exploit permissions required technical description

Frequently Asked Questions

What is the severity of CVE-2023-3500?
CVE-2023-3500 has been scored as a medium severity vulnerability.
How to fix CVE-2023-3500?
To fix CVE-2023-3500: Upgrade to versions 16.2.2, 16.1.3, 16.0.8 or above.
Is CVE-2023-3500 being actively exploited in the wild?
It is possible that CVE-2023-3500 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-2023-3500?
CVE-2023-3500 affects GitLab GitLab.
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