Newly listed by CISAGitLab Community Edition and Enterprise EditionDeveloper, data & AI tools
GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound Vulnerability
- What it is
- 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.
- Who's affected
- Anyone using GitLab Community Edition and Enterprise Edition.
- Under attack?
- Yes. CISA added this to its catalog of actively exploited vulnerabilities on Oct 29, 2026.
- What to do
- Install the vendor's security update. If there isn't one yet, apply the vendor's workaround, or stop using the product until it's fixed. CISA lists this as actively exploited, so treat it as urgent.
- Fixed in
- See the vendor's advisory
- CISA deadline
- Federal agencies must fix this by Nov 1, 2026. Everyone else should treat that as a ceiling, not a target.
- CISA's instruction
- 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.
Attack timeline
- Oct 13, 2026Went publicThe flaw was published with its CVE number.
- Oct 29, 2026+16 daysCISA listed it as exploitedAdded to CISA's Known Exploited Vulnerabilities catalog.
- Nov 1, 2026+3 daysFederal fix deadlineU.S. agencies must have it fixed by this date.
GitLab scorecard: every exploited GitLab flaw →
Client notice ready to send
Fill in the bracketed parts, then paste into an email to your clients or team.