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Low severity3.5NVD Advisory· Published Apr 22, 2026· Updated Jun 17, 2026

CVE-2026-3254

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.

Affected products

4
  • GitLab Inc./GitLab2 versions
    cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*+ 1 more
    • cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*
    • cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*
  • GitLab Inc./GitLab EE and CEllm-fuzzy
    Range: from 18.11 before 18.11.1
  • osv-coords
    pkg:bitnami/gitlab
    Range: >= 18.11.0, < 18.11.1

Patches

Vulnerability mechanics

References

1

News mentions

1