CVE-2026-77138

CVE-2026-77138 affects the TYPO3 extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail) . The extension passes an attacker-controlled cookie directly to PHP's unserialize() without safe processing, enabling PHP Object Injection . A remote, unauthenticated attacker can supply a ...

CVE-2026-77138 Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)

The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server...

TYPO3-EXT-SA-2026-014: Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)

More info at https://news.typo3.com/security/advisory/typo3-ext-sa-2026-014...