CVE-2026-8589

⚠️ high

Summary

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.

CVSS Score

7.3

High

EPSS Score

0.4

Exploit Probability

Published Date

2026-06-11

First Seen: 2026-06-12

📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 55.5% of all 328,009 vulnerabilities in our database.

#145,998

Above average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jun 11, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

Thanks [go7f0](https://hackerone.com/go7f0) for reporting this vulnerability through our HackerOne bug bounty program

SSVC data provided by CISA

Last Modified 2026-06-11

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-79

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
gitlab	gitlab	Affected	> 13.1.4 < 18.10.8
gitlab	gitlab	Affected	> 18.11.0 < 18.11.5
gitlab	gitlab	Affected	> 19.0.0 < 19.0.2

🔗 References 3

https://about.gitlab.com/releases/2026/06/10/patch-r...

Release Notes

https://gitlab.com/gitlab-org/gitlab/-/work_items/60...

Issue Tracking

https://hackerone.com/reports/3722842

Permissions Required

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-10087	⚠️ high	8.7	0.4	GitLab has remediated an issue in GitLab EE affecting all versions from 17.1 before 18.10.8, 18.11 before 18.11.5, and 1...	2026-06-11
CVE-2026-10733	🔶 medium	4.3	0.4	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.0 before 18.10.8, 18.11 before 18.11.5, an...	2026-06-11
CVE-2026-1500	🔶 medium	6.5	0.6	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.10.8, 18.11 before 18.11.5, a...	2026-06-11
CVE-2026-3553	ℹ️ low	3.1	0.3	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.0 before 18.10.8, 18.11 before 18.11.5, an...	2026-06-11
CVE-2026-6269	🔶 medium	5.4	0.3	GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before 18.10.8, 18.11 before 18.11.5, a...	2026-06-11
CVE-2026-6277	🔶 medium	4.3	0.3	GitLab has remediated an issue in GitLab EE affecting all versions from 13.9 before 18.10.8, 18.11 before 18.11.5, and 1...	2026-06-11

These CVEs affect the same products