CVE-2026-3254

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.

References

https://hackerone.com/reports/3572752

https://gitlab.com/gitlab-org/gitlab/-/work_items/591587

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3