CVE-2023-3500

Name: CVE-2023-3500
Creator: NVD / NIST
Published: 2023-08-02T01:15:09.52+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2023-3500 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.47%

37.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 10.0, < 16.0.8
Gitlab	Gitlab	>= 16.1, < 16.1.3
Gitlab	Gitlab	>= 16.2, < 16.2.2

References

https://gitlab.com/gitlab-org/gitlab/-/issues/416902Broken Link
https://hackerone.com/reports/2010926Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/issues/416902Broken Link
https://hackerone.com/reports/2010926Permissions Required

Timeline

Published: Aug 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-3500?

How severe is CVE-2023-3500?

CVE-2023-3500 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3500?

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-2023-3500?

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

Scan your code now

Source: NVD / NIST