Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to load unauthorized content into another user's browser due to improper input validation in the Mermaid sandbox.

INFO

Published Date :

2026-04-22T16:29:48.833Z

Last Modified :

2026-04-22T17:39:44.965Z

Source :

GitLab
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3254 vulnerability.

Vendors Products
Gitlab
  • Gitlab
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3254.

URL Resource
https://gitlab.com/gitlab-org/gitlab/-/work_items/591587 cve-icon cve-icon
https://hackerone.com/reports/3572752 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact