CVE-2026-2973
Last modified
CVE-2026-2973 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.7 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to execute arbitrary JavaScript in a user's browser due to improper sanitization of entity-encoded content in Mermaid diagrams.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.7 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to execute arbitrary JavaScript in a user's browser due to improper sanitization of entity-encoded content in Mermaid diagrams.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 17.7.0, < 18.8.7 |
| Gitlab | Gitlab | >= 18.9.0, < 18.9.3 |
| Gitlab | Gitlab | 18.10.0 |
References
- https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/Release Notes, Vendor Advisory
- https://hackerone.com/reports/3566802Permissions Required
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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