CVE-2026-12436 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Gitlab	Gitlab

No data.

No data.

No data.

References

Link	Providers
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/603223
https://hackerone.com/reports/3800511

History

Wed, 29 Jul 2026 20:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 29 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab
First Time appeared		Gitlab Gitlab gitlab
Weaknesses		CWE-915
CPEs		cpe:2.3:a:gitlab:gitlab::::::::
Vendors & Products		Gitlab Gitlab gitlab
References		https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/ https://gitlab.com/gitlab-org/gitlab/-/work_items/603223 https://hackerone.com/reports/3800511
Metrics		cvssV3_1 `{'score': 8.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L'}`

MITRE

Status: PUBLISHED

Assigner: GitLab

Published: 2026-07-29T19:00:36.048Z

Updated: 2026-07-29T19:54:29.544Z

Reserved: 2026-06-16T19:08:45.458Z

Link: CVE-2026-12436

Vulnrichment

Updated: 2026-07-29T19:41:31.099Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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