Critical severity · published Oct 22, 2026
CVE-2026-110264
Integer Overflow or Wraparound in GitLab
New
10.0
CVSS
1%
EPSS
No
On KEV
Description
An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server due to integer overflow when compiling a specially crafted regular expression.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
7.0 before 18.11.13; 19.0 before 19.0.10; 19.1 before 19.1.9; 19.2 before 19.2.9; 19.3 before 19.3.6; 19.4 before 19.4.3; +1 more · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110264
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110264
Release Notes
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/
Permissions Required
https://gitlab.com/gitlab-org/gitlab/-/work_items/633633
Permissions Required
https://hackerone.com/reports/4093475
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