Cross-site scripting in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-8589

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Main Vulnerability Database Vulnerabilities #VU134374

Cross-site scripting in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-8589

Published: June 11, 2026


Vulnerability identifier: #VU134374
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-8589
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to add unauthorized email addresses to a targeted user's account.

The vulnerability exists due to improper neutralization of input during web page generation in certain group setting fields when processing user-supplied input. A remote privileged user can inject crafted input to add unauthorized email addresses to a targeted user's account.

User interaction is required.


Affected software

Gitlab Community Edition
GitLab Enterprise Edition

How to mitigate CVE-2026-8589

Install security update from vendor's website.

Gitlab Community Edition - addressed in versions 18.10.8, 18.11.5, 19.0.2
GitLab Enterprise Edition - addressed in versions 18.10.8, 18.11.5, 19.0.2

External References

Related Security Bulletins