Authorization Bypass Through User-Controlled Key in GitLab
Published Apr 8, 2026
4.3
MEDIUMCVSS 3.1
EPSS 0.31%
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to access confidential issues assigned to other users via CSV export due to insufficient authorization checks.
Affected products
-
- Version 18.10StatusaffectedConstraints<18.10.3
- Version 18.2StatusaffectedConstraints<18.8.9
- Version 18.9StatusaffectedConstraints<18.9.5
- Version
Configuration 1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to versions 18.8.9, 18.9.5, 18.10.3 or above.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 9, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Apr-Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.31% (0.00308) | 21.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.26% (0.00264) | 17.48th | v5 (v2026.06.15) |
| Apr 9, 2026 | 0.01% (0.00012) | 1.79th | v4 (v2025.03.14) |
References (3)
- https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/ Release NotesVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/work_items/589021 Broken Link
- https://hackerone.com/reports/3541476 technical-descriptionexploitpermissions-requiredPermissions Required
| Link | Providers | Tags |
|---|---|---|
| https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released/ | Release NotesVendor Advisory | |
| https://gitlab.com/gitlab-org/gitlab/-/work_items/589021 | Broken Link | |
| https://hackerone.com/reports/3541476 | technical-descriptionexploitpermissions-requiredPermissions Required |
Change history (0)
No recorded changes yet.