b2evolution CMS 6.7.8 through 7.2.5 Object Injection via Negative Integer Array Key

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 param_check_serialized_array() fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST requests to htsrv/call_plugin.php that bypass validation and reach unserialize(), instantiating arbitrary PHP objects with attacker-chosen properties that may enable code execution if suitable POP gadget chains exist.

b2evolution 7.2.2 - 'edit account details' Cross-Site Request Forgery (CSRF)

b2evolution 7.2.2 contains a cross-site request forgery vulnerability that allows attackers to modify admin account details without authentication. Attackers can craft a malicious HTML form to submit unauthorized changes to user profiles by tricking victims into loading a specially crafted webpage.

In b2evolution 7.2.5, if configured with admins_can_manipulate_sensitive_files, arbitrary file upload is allowed for admins, leading to command execution. NOTE: the vendor's position is that this is "very obviously a feature not an issue and if you don't like that feature it is very obvious how to disable it."

b2evolution CMS v7.2.3 was discovered to contain a SQL injection vulnerability via the parameter cfqueryparam in the User login section. This vulnerability allows attackers to execute arbitrary code via a crafted input.

b2evolution CMS v7.2.3 was discovered to contain a Cross-Site Request Forgery (CSRF) via the User login page. This vulnerability allows attackers to escalate privileges.

Reflected cross-site scripting vulnerability (XSS) in the evoadm.php file in b2evolution cms version 6.11.6-stable allows remote attackers to inject arbitrary webscript or HTML code via the tab3 parameter.