CVE-2026-93577: Integer Overflow or Wraparound in GitLab
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 an integer overflow issue when compiling a specially crafted regular expression in a CI/CD configuration.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.2.7 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.3.3 - Upgrade
Upgrade
GitLab CE/EEto a version that resolves this vulnerability.Fixed in 19.4.1
Event History
Frequently Asked Questions
Which GitLab versions need to be updated?
GitLab CE/EE versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 are affected. Update to 19.2.7, 19.3.3, 19.4.1, or a later release in the applicable release line.
What level of access does an attacker need?
An attacker needs an authenticated GitLab account with the ability to provide a specially crafted regular expression in a CI/CD configuration. No user interaction is required once the malicious configuration is processed.
What is the potential impact of successful exploitation?
Successful exploitation could allow arbitrary code execution on the GitLab server. The published severity vector indicates high impact to confidentiality, integrity, and availability, with impact extending beyond the initially compromised security authority.