GitLab CE/EE <19.0.5/19.1.3/19.2.1 CI/CD Config Escalation via Pipeline Schedule
CVE-2026-12436 Published on July 29, 2026
Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab
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.
Vulnerability Analysis
CVE-2026-12436 is exploitable with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a Mass Assignment Vulnerability?
The software receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified.
CVE-2026-12436 has been classified to as a Mass Assignment vulnerability or weakness.
Products Associated with CVE-2026-12436
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Affected Versions
GitLab:- Version 18.0 and below 19.0.5 is affected.
- Version 19.1 and below 19.1.3 is affected.
- Version 19.2 and below 19.2.1 is affected.