CVE-2026-12436 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-12436HIGH

GitLab GitLab — Improperly Controlled Modification of Dynamically-Determined Object Attributes in GitLab

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   L   N  C  H  H  L    8.4   .0031   23.7     —

AFFECTED
  Product  Versions  Fixed
  GitLab   18.0 –    —

TIMELINE
  Jun 16  Reserved by GitLab
  Jul 29  Published (CNA: GitLab)
  Jul 30  EXPLOIT PUBLISHED — CVE-2026-12436 (GitLab). Public exploit reference added.

CWE-915 · CNA: GitLab · CVSS v3.1 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 16, 2026	Reserved	Reserved by GitLab
July 29, 2026	Published	Published (CNA: GitLab)
July 30, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-12436 (GitLab). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
GitLab	GitLab	—	18.0	—

Weaknesses

CWE-915

References (3)

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/ [Release Notes, Vendor Advisory]
https://gitlab.com/gitlab-org/gitlab/-/work_items/603223 [Broken Link]
https://hackerone.com/reports/3800511 [Permissions Required]

Authoritative record: CVE-2026-12436 at cve.org

Vendors: gitlab

Weaknesses: CWE-915

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-12436 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.