CVE-2026-67207: Wolf CMS 0.8.3.1 Authorization Bypass via BackupRestoreController

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-30 · updated 2026-07-31
Weakness: CWE-697

Description

Wolf CMS through 0.8.3.1 contains an authorization bypass vulnerability in BackupRestoreController that allows authenticated non-administrative users to access restricted backup functionality due to a PHP operator precedence flaw in the permission check expression. Attackers can exploit the incorrect evaluation of the access control expression to create, download, and restore backups without administrative privileges.

Affected products

wolfcms: all versions

References

https://github.com/Caycon/cve-advisories/blob/main/2026/WolfCms/CVE-2026-67207.md
https://www.vulncheck.com/advisories/wolf-cms-authorization-bypass-via-backuprestorecontroller

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