ShortPixel Image Optimizer < 6.4.4 - Author+ PHP Object Injection

Description

The plugin is vulnerable to PHP Object Injection via deserialization of untrusted input, allowing authenticated attackers with Author-level access and above to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.