CVE-2026-6736

Katalog CVE

CVSS 6.5 · Medium EPSS 0,41%

Kerentanan Missing Authentication for Critical Function pada github enterprise server. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

An authentication bypass vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to create a local user account, bypassing the configured external identity provider. When external authentication was enabled, the signup endpoint did not properly enforce the authentication restriction, allowing account creation and session establishment without identity provider validation. The created account was limited to the default base permissions configured on the instance. Exploitation required network access to a GHES instance configured with an external authentication provider. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.2, 3.19.6, 3.18.9, 3.17.15, and 3.16.18.

Rincian

Terbit di NVD

7 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-306: Missing Authentication for Critical Function

EPSS (30 hari)

0,41% peluang dieksploitasi; lebih tinggi dari 33,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18 release notes · advisory vendor
• https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15 release notes · advisory vendor
• https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9 release notes · advisory vendor
• https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6 release notes · advisory vendor
• https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2 release notes · advisory vendor