CVE-2026-15343
A remote, authenticated attacker can exploit multiple vulnerabilities in Microsoft GitHub Enterprise Server to carry out a Denial of Service attack, manipulate data, execute code, and disclose information.
CSIRTS triage
- What
- Multiple vulnerabilities can be exploited to carry out Denial of Service attacks, manipulate data, execute code, and disclose information.
- Who is affected
- Remote, authenticated users of Microsoft GitHub Enterprise Server are affected.
- Urgency
- Remediation is critical due to the high severity of the vulnerabilities and potential for exploitation.
- Action
- Apply the latest security updates for GitHub Enterprise Server.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [high] Microsoft GitHub Enterprise Server: Multiple vulnerabilitiescert-bund · 2026-07-20
- unknownCVE-2026-15343: A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an atta…nvd · 2026-07-17
External references
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[](https://www.csirts.com/cve/CVE-2026-15343)