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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-27591 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/wintercms/winter/security/advisories/GHSA-pgpf-m8m4-6cg6 GitHub, Inc.
https://wintercms.com/releases/v1.0.477 GitHub, Inc.
https://wintercms.com/releases/v1.1.12 GitHub, Inc.
https://wintercms.com/releases/v1.2.12 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-284 Improper Access Control GitHub, Inc.  
CWE-639 Authorization Bypass Through User-Controlled Key GitHub, Inc.  
CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-27591
NVD Published Date:
03/11/2026
NVD Last Modified:
03/11/2026
Source:
GitHub, Inc.