CVE-2026-110264 PUBLISHED

Integer Overflow or Wraparound in GitLab

Assigner: GitLab
Reserved: 13.10.2026 Published: 22.10.2026 Updated: 22.10.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 10

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 7.0 to 18.11.13 (excl.) affected from 19.0 to 19.0.10 (excl.) affected from 19.1 to 19.1.9 (excl.) affected from 19.2 to 19.2.9 (excl.) affected from 19.3 to 19.3.6 (excl.) affected from 19.4 to 19.4.3 (excl.) affected from 19.5 to 19.5.1 (excl.)

Solutions

Upgrade to versions 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, 19.5.1, or later.

Credits

Thanks [joaxcar](https://hackerone.com/joaxcar) for reporting this vulnerability through our HackerOne bug bounty program finder

References

Problem Types

CWE-190: Integer Overflow or Wraparound CWE