PatchTheCVECVE-2026-110264: An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0
CVE-2026-110264 is a critical-severity flaw (CVSS 10.0) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Covered by 4 security sources
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 58%) |
| CISA exploited list | No |
| Weakness | CWE-190 |
| Published | 2026-10-22 |
| Last modified | 2026-10-22 |
Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: TahuCryptsi/gitlab-onigmo-check (0 stars)
- GitHub PoC: TahuCryptsi/poc-gitlab-onigmo-cve-2026-110264 (0 stars)
- GitHub PoC: al4n4n/CVE-2026-110264 (0 stars)
Advisories and coverage
Official advisories
- Ruby News: Ruby 3.3.13 Released 2026-10-23
- Ruby News: Ruby 3.4.12 Released 2026-10-23
- Ruby News: Ruby 4.0.9 Released 2026-10-23
- Ruby News: Regexp compilation fixes related to GitLab's CVE-2026-89078, CVE-2026-93577, CVE-2026-97229 and CVE-2026-110264 2026-10-23
- CERT-SE Sweden: Kritisk sårbarhet i GitLab CE och EE 2026-10-22
- NCSC Netherlands: NCSC-2026-0447 [1.00] [M/H] Kwetsbaarheden verholpen in GitLab door GitLab Inc. 2026-10-22
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-110264?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-110264 being exploited?
CVE-2026-110264 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-110264 affect?
CVE-2026-110264 affects affected software. Severity is critical (CVSS 10.0). 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 co
How urgent is CVE-2026-110264?
Priority 57/100. Critical severity; Covered by 4 security sources; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action