What is CVE-2026-12436?

CVE-2026-12436 is a high-severity vulnerability in Gitlab, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 8.4/10. Published 2026-07-29.

How severe is CVE-2026-12436?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Gitlab

CVE-2026-12436

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…

Vulnerability class: Mass Assignment

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L.

Affected products

Gitlab — versions 18.0, 19.1, 19.2

Weakness classification (CWE)

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

References

cve@gitlab.com
cve@gitlab.com (technical-description, permissions-required, exploit)
cve@gitlab.com

Frequently asked questions

What is CVE-2026-12436?: CVE-2026-12436 is a high-severity vulnerability in Gitlab, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 8.4/10. Published 2026-07-29.
How severe is CVE-2026-12436?: High severity. CVSS v3 base score is 8.4 out of 10.