CVE-2026-12436

Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab

State: Published
Severity: 8.4 High
Published: Jul 29, 2026
Updated: Jul 31, 2026
Reserved: Jun 16, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L	GitLab

Weaknesses

CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes

Affected Products

Product	Versions
GitLabGitLab	18.0 to before 19.0.5Affected 19.1 to before 19.1.3Affected 19.2 to before 19.2.1Affected

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/603223
HackerOne Bug Bounty Report #3800511technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/

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