CVE-2026-84284CWE-863broken-access-control

CVE-2026-84284

Medium · published October 13, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
12.0
In the wild
Unconfirmed
What it is

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.11 before 19.2.8, 19.3 before 19.3.6, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to read work item contents from private groups and projects due to incorrect authorization checks.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00221 · 12.0th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-10-13T06:17Z
Affected products (4)
ProductVersionsFixed in
gitlab/gitlab≥ 17.11.0, < 19.2.819.2.8
gitlab/gitlab≥ 17.11.0, < 19.2.819.2.8
gitlab/gitlab≥ 19.3.0, < 19.4.219.4.2
gitlab/gitlab≥ 19.3.0, < 19.4.219.4.2
References (3)
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/ · [email protected]https://gitlab.com/gitlab-org/gitlab/-/work_items/627167 · [email protected]https://hackerone.com/reports/3551698 · [email protected]
EPSS history
Timeline
  • 14 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 13 OCT 01:06Z
    Incorrect Authorization in GitLab
    cvelistv5
  • 13 OCT 01:06Z
    Incorrect Authorization in GitLab
    cvelistv5