CVE-2026-2973 — MEDIUM (5.4)

Q: How severe is CVE-2026-2973?

CVE-2026-2973 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-2973?

Check the references section above for vendor advisories and patch information. Affected products include: Gitlab Gitlab.

Vulnerability 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.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Gitlab	Gitlab	>= 17.7.0, < 18.8.7

Related Weaknesses (CWE)

CWE-79

References

https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-releasRelease NotesVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/591049Broken Link
https://hackerone.com/reports/3566802Permissions Required

FAQ

What is CVE-2026-2973?

CVE-2026-2973 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 arb...

How severe is CVE-2026-2973?

CVE-2026-2973 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-2973?

Check the references section above for vendor advisories and patch information. Affected products include: Gitlab Gitlab.