WID-SEC-W-2026-1231

csafDEcert_bund

DeutschShown in its original language — a full translation is planned for a future version.

Microsoft GitHub Enterprise: Mehrere Schwachstellen

view advisory published 2026-04-21

Ein Angreifer kann mehrere Schwachstellen in Microsoft GitHub Enterprise ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um beliebigen Programmcode auszuführen, und um Informationen offenzulegen.

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describes (6)

Related CVEs.

IDseverity exploitable
CVE-2026-5921UShigh8.9—
A server-side request forgery (SSRF) vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance…
CVE-2026-5845UScritical9.6—
An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositor…
CVE-2026-5512USmedium4.3—
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their nu…
CVE-2026-4821US—Exploit
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it was published in error.
CVE-2026-4296UShigh8.8—
An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledg…
CVE-2026-3307USlow2.7—
An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push pro…
02

references

External citations — patches, advisories, analysis.

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