CVE-2026-100755CWE-349

CVE-2026-100755

Medium · published October 13, 2026

CVSS v3.1
4.6
EPSS
0%
Percentile
0.5
In the wild
Unconfirmed
What it is

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain deployment configurations, could have allowed an authenticated user to poison cached page content served to other users due to improper cache key construction.

The record
Technical detail
CVSS v3.1
4.6 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00092 · 0.5th percentile
Weakness
CWE-349 · Acceptance of Extraneous Untrusted Data With Trusted Data
Published
2026-10-13T06:16Z
Affected products (6)
ProductVersionsFixed in
gitlab/gitlab≥ 16.2.0, < 19.2.819.2.8
gitlab/gitlab≥ 16.2.0, < 19.2.819.2.8
gitlab/gitlab≥ 19.3.0, < 19.3.519.3.5
gitlab/gitlab≥ 19.3.0, < 19.3.519.3.5
gitlab/gitlab≥ 19.4.0, < 19.4.219.4.2
gitlab/gitlab≥ 19.4.0, < 19.4.219.4.2
References (2)
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/ · [email protected]https://gitlab.com/gitlab-org/gitlab/-/work_items/627507 · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 13 OCT 01:05Z
    Acceptance of Extraneous Untrusted Data With Trusted Data in GitLab
    cvelistv5
  • 13 OCT 01:05Z
    Acceptance of Extraneous Untrusted Data With Trusted Data in GitLab
    cvelistv5