CVE-2026-97229GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound Vulnerability

What CISA says

GitLab Community Edition and Enterprise Edition contain a integer overflow or wraparound vulnerability that could allow an unauthenticated user to execute arbitrary code on the GitLab server via a specially crafted regular expression in a CI/CD configuration, due to insufficient regular expression validation.

What CISA asks you to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Sources

• www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves
• docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/
• NVD entry: nvd.nist.gov/vuln/detail/CVE-2026-97229
• CISA KEV catalog

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