CVE-2026-4527

🔶 medium

Summary

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.

CVSS Score

6.5

Medium

EPSS Score

0.0

Exploit Probability

Published Date

2026-05-14

First Seen: 2026-05-17

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 47.8% of all 328,009 vulnerabilities in our database.

#171,192

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 14, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

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

SSVC data provided by CISA

Last Modified 2026-05-15

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-352

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
gitlab	gitlab	Affected	> 18.10.0 < 18.10.6
gitlab	gitlab	Affected	> 18.11.0 < 18.11.3
gitlab	gitlab	Affected	> 11.10.0 < 18.9.7

🔗 References 3

https://about.gitlab.com/releases/2026/05/13/patch-r...

Release Notes

https://gitlab.com/gitlab-org/gitlab/-/work_items/59...

Broken Link

https://hackerone.com/reports/3590487

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