CVE-2021-22242
HIGHGitLab 11.4.0-13.12.8 - Stored Cross-Site Scripting via Mermaid Markdown
Title source: llmDescription
Insufficient input sanitization in Mermaid markdown in GitLab CE/EE version 11.4 and up allows an attacker to exploit a stored cross-site scripting vulnerability via a specially-crafted markdown
References (3)
Core 3
Core References
Broken Link x_refsource_misc
https://gitlab.com/gitlab-org/gitlab/-/issues/332528
Permissions Required, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/1212822
Vendor Advisory x_refsource_confirm
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22242.json
Scores
CVSS v3
8.7
EPSS
0.0228
EPSS Percentile
84.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Details
CWE
CWE-79
Status
published
Products (1)
gitlab/gitlab
11.4.0 - 13.12.9 (2 CPE variants)
Published
Aug 25, 2021
Tracked Since
Feb 18, 2026