CVE-2026-8937CWE-862broken-access-control

CVE-2026-8937

Medium · published September 29, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
22.5
In the wild
Unconfirmed
What it is

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to read private child issue contents, including titles and descriptions, from projects they had no access to, due to missing authorization checks on linked work items within visible epics.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00309 · 22.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-29T14:17Z
Affected products (6)
ProductVersionsFixed in
gitlab/gitlab≥ 19.0.0, < 19.2.719.2.7
gitlab/gitlab≥ 19.0.0, < 19.2.719.2.7
gitlab/gitlab≥ 19.3.0, < 19.3.319.3.3
gitlab/gitlab≥ 19.3.0, < 19.3.319.3.3
gitlab/gitlaball versions—
gitlab/gitlaball versions—
References (3)
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ · [email protected]https://gitlab.com/gitlab-org/gitlab/-/work_items/600533 · [email protected]https://hackerone.com/reports/3702369 · [email protected]
EPSS history
Timeline
  • 30 SEP 03:29Z
    EPSS moved — → 0%
    epss
  • 29 SEP 09:35Z
    Missing Authorization in GitLab
    cvelistv5