CVE-2026-12436

high

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to modify CI/CD configuration belonging to another user due to improper validation of user-supplied attributes when processing pipeline schedule inputs.

References

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/

https://hackerone.com/reports/3800511

https://gitlab.com/gitlab-org/gitlab/-/work_items/603223

Details

Source: Mitre, NVD

Published: 2026-07-29

Updated: 2026-07-31

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:P

Severity: Medium

CVSS v3

Base Score: 8.4

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

Severity: High

EPSS

EPSS: 0.00303