CVE-2026-76834: Deserialization of Untrusted Data

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in paramcheckserializedarray fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST...