Threat landscape
high

Microsoft GitHub Enterprise: Mehrere Schwachstellen

WID-SEC-2026-3764 · first 07.10.2026 · updated 07.10.2026 · CVSS 8,8

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What it is about

GitHub ist ein netzbasierter Dienst zur Versionsverwaltung für Software-Entwicklungsprojekte. Ein Angreifer kann mehrere Schwachstellen in Microsoft GitHub Enterprise ausnutzen, um Daten zu manipulieren, und um beliebigen Programmcode auszuführen.

Under what conditions?

The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.

What can happen in the worst case

An attacker could use the vulnerability to

  • Daten zu manipulieren
  • beliebigen Programmcode auszuführen

Am I affected?

Affected according to the BSI:

  • Microsoft GitHub Enterprise Server <3.18.16
  • Microsoft GitHub Enterprise Server <3.19.13
  • Microsoft GitHub Enterprise Server <3.20.9
  • Microsoft GitHub Enterprise Server <3.21.7
  • Microsoft GitHub Enterprise Server <3.22.2

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

  • Microsoft GitHub Enterprise Server 3.18.16
  • Microsoft GitHub Enterprise Server 3.19.13
  • Microsoft GitHub Enterprise Server 3.20.9
  • Microsoft GitHub Enterprise Server 3.21.7
  • Microsoft GitHub Enterprise Server 3.22.2

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.

Information and sources

CVE: CVE-2026-103620, CVE-2026-96890

Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.

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