CVE-2026-18730
A remote, anonymous attacker can exploit multiple vulnerabilities in Microsoft GitHub Enterprise Server to disclose information or execute arbitrary code.
CSIRTS triage
- What
- Multiple vulnerabilities enable information disclosure and remote code execution.
- Who is affected
- Instances of GitHub Enterprise Server connected to networks or exposed to the internet.
- Urgency
- High; remote code execution is possible without authentication.
- Action
- Update GitHub Enterprise Server to the patched version provided by Microsoft immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.31% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownGitHub Enterprise Server Multiple Vulnerabilitieshkcert · 2026-09-03
- high[NEW] [high] Microsoft GitHub Enterprise Server: Multiple vulnerabilitiescert-bund · 2026-09-02
- unknownCVE-2026-18730: A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server …nvd · 2026-09-01
External references
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[](https://www.csirts.com/cve/CVE-2026-18730)