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vBulletin 5.0.0 through 5.7.5 and 6.0.0 through 6.0.3 allows unauthenticated users to invoke protected API controllers' methods when running on PHP 8.1 or later, as demonstrated by the /api.php?method=protectedMethod pattern, as exploited in the wild in May 2025.
Reserved 2025-05-27 | Published 2025-05-27 | Updated 2025-05-27 | Assigner mitreCWE-424 Improper Protection of Alternate Path
karmainsecurity.com/...l-that-protected-method-vbulletin-rce
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