CVE-2026-8589

Name: CVE-2026-8589
Creator: NVD / NIST
Published: 2026-06-11T12:16:32.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2026-8589 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. GitLab has remediated an issue in GitLab EE affecting all versions from 13.1.4 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to add unauthorized email addresses to a targeted user's account due to improper sanitization of user-supplied input in certain group setting fields.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 13.1.4 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to add unauthorized email addresses to a targeted user's account due to improper sanitization of user-supplied input in certain group setting fields.

Metrics

CVSS 3.1

8.7/10

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

EPSS Probability

0.26%

16.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 13.1.4, < 18.10.8
Gitlab	Gitlab	>= 18.11.0, < 18.11.5
Gitlab	Gitlab	>= 19.0.0, < 19.0.2

References

https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/Release Notes
https://gitlab.com/gitlab-org/gitlab/-/work_items/600099Issue Tracking
https://hackerone.com/reports/3722842Permissions Required

Timeline

Published: Jun 11, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8589?

How severe is CVE-2026-8589?

CVE-2026-8589 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8589?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-8589?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST