Remote code execution affecting GitLab CE/EE
GitLab Community Edition (CE) and Enterprise Edition (EE) are DevOps lifecycle management platforms enabling source code repository hosting, collaboration, and continuous integration/continuous deployment (CI/CD).
Description
Technical context and vulnerability details
This product is affected by a vulnerability labeled CVE-2026-110264, due to an integer overflow in the Onigmo regular expression compilation engine used by Ruby. Exploitation of this vulnerability would allow a malicious actor to access hosted sensitive data, including source code repositories and CI/CD secrets, and execute arbitrary code remotely on the vulnerable GitLab server. This vulnerability is classified critical with a severity score of 10 according to CVSS v3.1.
Potential Risks & Impact
Potential consequences upon exploitation
- Remote Arbitrary Code Execution;
- Breach of confidentiality of data and source code repositories;
- Unauthorized modification or deletion of data;
- System and data integrity breach;
- Breach of data availability;
Affected systems
Products, components and targeted versions
- GitLab versions 7.0 to 18.11.x, prior to version 18.11.13;
- GitLab versions 19.0.x, prior to version 19.0.10;
- GitLab versions 19.1.x, prior to version 19.1.9;
- GitLab versions 19.2.x, prior to version 19.2.9;
- GitLab versions 19.3.x, prior to version 19.3.6;
- GitLab versions 19.4.x, prior to version 19.4.3;
- GitLab versions 19.5.x, prior to version 19.5.1;
Recommended Remediations & Actions
Immediate actions and recommended mitigations
- Update GitLab CE/EE releases to patched versions for their branch, or to a later supported version;
Sources & External Links
Vendor security advisories and documentation
Advisory Specifications
CSIRT Emergency Response
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