CVE-2026-3553

LOW 3.1

Incorrect Authorization in GitLab

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

0th

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, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user to access confidential issue details due to incorrect authorization checks.

CWE	CWE-863
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Jun 11, 2026
Last Updated	Jun 11, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

GitLab / GitLab

12.0 < 18.10.8 18.11 < 18.11.5 19.0 < 19.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hackerone.com: https://hackerone.com/reports/3578216 gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/592295 about.gitlab.com: https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/

Credits

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