CVE-2026-1999

Katalog CVE

CVSS 6.5 · Medium EPSS 0,34%

Kerentanan Incorrect Authorization pada github enterprise server. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

An incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed an attacker to merge their own pull request into a repository without having push access by exploiting an authorization bypass in the enable_auto_merge mutation for pull requests. This issue only affected repositories that allow forking as the attack relies on opening a pull request from an attacker-controlled fork into the target repository. Exploitation was only possible in specific scenarios. It required a clean pull request status and only applied to branches without branch protection rules enabled. This vulnerability affected GitHub Enterprise Server versions prior to 3.19.2, 3.18.5, and 3.17.11, and was fixed in versions 3.19.2, 3.18.5, and 3.17.11. This vulnerability was reported via the GitHub Bug Bounty program.

Rincian

Terbit di NVD

18 Februari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-863: Incorrect Authorization

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.11
• https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.5
• https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.2