Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-89078

CVE-2026-89078CRITICAL

GitLab GitLab — Double Free in GitLab

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  L    9.9   .0036   27.0     —

AFFECTED
  Product  Versions  Fixed
  GitLab   19.2 –    —

TIMELINE
  Sep 10  Reserved by GitLab
  Sep 23  Published (CNA: GitLab)
  Sep 25  EXPLOIT PUBLISHED — CVE-2026-89078 (GitLab). Public exploit reference added.

CWE-415 · CNA: GitLab · CVSS v3.1 · 3 references · NVD status: Analyzed

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 10, 2026	Reserved	Reserved by GitLab
September 23, 2026	Published	Published (CNA: GitLab)
September 25, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-89078 (GitLab). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
GitLab	GitLab	—	19.2	—

Weaknesses

CWE-415

References (3)

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/ [Release Notes, Vendor Advisory]
https://gitlab.com/gitlab-org/gitlab/-/work_items/628577 [Issue Tracking]
https://hackerone.com/reports/4019059 [Permissions Required]

Authoritative record: CVE-2026-89078 at cve.org

Vendors: gitlab

Weaknesses: CWE-415

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-89078 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 Saturday, October 3, 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.