High severity · published Jul 29, 2026
CVE-2026-12436
Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab
8.4
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
18.0 before 19.0.5; 19.1 before 19.1.3; 19.2 before 19.2.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12436
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12436
Release Notes
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/
Broken Link
https://gitlab.com/gitlab-org/gitlab/-/work_items/603223
Permissions Required
https://hackerone.com/reports/3800511
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