CVE-2026-27591

Katalog CVE

CVSS 9.9 · Critical EPSS 0,86%

Kerentanan Improper Access Control pada wintercms winter. Skor CVSS 3.1 9.9 (Critical) menurut github.com.

Deskripsi (NVD)

Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. Prior to 1.0.477, 1.1.12, and 1.2.12, Winter CMS allowed authenticated backend users to escalate their accounts level of access to the system by modifying the roles / permissions assigned to their account through specially crafted requests to the backend while logged in. To actively exploit this security issue, an attacker would need access to the Backend with a user account with any level of access. This vulnerability is fixed in 1.0.477, 1.1.12, and 1.2.12.

Rincian

Terbit di NVD

11 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.9 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-284: Improper Access Control
CWE-639: Authorization Bypass Through User-Controlled Key
CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

EPSS (30 hari)

0,86% peluang dieksploitasi; lebih tinggi dari 57,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/wintercms/winter/security/advisories/GHSA-pgpf-m8m4-6cg6 patch · advisory vendor
• https://wintercms.com/releases/v1.0.477 release notes
• https://wintercms.com/releases/v1.1.12 release notes
• https://wintercms.com/releases/v1.2.12 release notes