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CVE-2026-27591
PHP vulnerability analysis and mitigation

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.


SourceNVD

Related PHP vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-34728HIGH8.7
  • PHPPHP
  • phpmyfaq/phpmyfaq
NoYesApr 02, 2026
CVE-2026-34598HIGH7.1
  • PHPPHP
  • yeswiki/yeswiki
NoYesApr 02, 2026
CVE-2026-34973MEDIUM6.9
  • PHPPHP
  • thorsten/phpmyfaq
NoYesApr 02, 2026
CVE-2026-34729MEDIUM6.1
  • PHPPHP
  • phpmyfaq/phpmyfaq
NoYesApr 02, 2026
CVE-2026-34974MEDIUM5.4
  • PHPPHP
  • thorsten/phpmyfaq
NoYesApr 02, 2026

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