Critical severity · published Sep 23, 2026
CVE-2026-89078
Double Free in GitLab
9.9
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
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 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
19.2 before 19.2.7; 19.3 before 19.3.3; 19.4 before 19.4.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89078
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89078
Release Notes
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-1-released/
Issue Tracking
https://gitlab.com/gitlab-org/gitlab/-/work_items/628577
Permissions Required
https://hackerone.com/reports/4019059
More from GitLab
10.0
CVE-2026-85706
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLab
10.0
CVE-2021-22205
GitLab Community and Enterprise Editions Remote Code Execution Vulnerability
9.8
CVE-2023-7028
Weak Password Recovery Mechanism for Forgotten Password in GitLab
9.8
CVE-2021-22175
GitLab Server-Side Request Forgery (SSRF) Vulnerability
7.5
CVE-2021-39935
GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability