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CVE-2026-89078

Double Free in GitLab

  • Critical 9.9
  • A public exploit reference is listed

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.

Key facts

Published
23 Sep 2026
Last changed
30 Oct 2026
Assigned by
GitLab
EPSS
0.522% likely to be exploited in the next 30 days, higher than 44.849% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: none; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 9.9CVSS 3.1, Criticalfrom the CNA (GitLab)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

What to do

  • Upgrade to versions 19.2.7, 19.3.3, 19.4.1 or above.CNA solution statement

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
GitLabGitLab
  • Default status: unaffected
  • 19.2 up to but excluding 19.2.7 (affected)
  • 19.3 up to but excluding 19.3.3 (affected)
  • 19.4 up to but excluding 19.4.1 (affected)

Timeline

  1. 23 Sep 2026 Published

Weakness

References