GitLab Community Edition and Enterprise Edition Integer Overflow or Wraparound Vulnerability
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code…
Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.
Exploitation probability EPSS · FIRST
Exploitation signals 4 / 5
- KEV catalog (CISA)29 Oct 2026
- Exploited in EUVD (ENISA)29 Oct 2026
- Used by ransomwareno
- EPSS above 10 %27.3%
- No account, over the networkyes
What to do
Fix
Apply the vendor’s fix as soon as it is available.
CISA guidance: 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.
Meanwhile
Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.
Manufacturers (CRA)
Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained
Description ENISA EUVD
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed 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.
Affected products
- 19.4 <19.4.2
- 19.3 <19.3.5
- 19.2 <19.2.8
Open source packages OSV
Affected libraries according to OSV, with fixed versions.
Timeline
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Published
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Exploitation reported (ENISA)
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Added to the KEV catalog
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EPSS peak: 27.3%
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CISA remediation due date
References
Other exploited vulnerabilities from the same vendor
- CVE-2026-85706GitLab Community Edition and Enterprise Edition Path Traversal Vulnerability9.3 · Actively exploited
- CVE-2021-22175GitLab Server-Side Request Forgery (SSRF) Vulnerability6.7 · Background exploitation
- CVE-2021-39935GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability6.2 · Background exploitation
- CVE-2023-7028GitLab Community and Enterprise Editions Improper Access Control Vulnerability9.2 · Background exploitation
- CVE-2021-22205GitLab Community and Enterprise Editions Remote Code Execution Vulnerability10.0 · Background exploitation