CVE-2026-77138
Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)
- State
- Published
- Severity
- 9.3 Critical
- Published
- Aug 25, 2026
- Updated
- Aug 25, 2026
- Reserved
- Aug 20, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | TYPO3 |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
Extension "HTML5 Video Player vs. Powermail"TYPO3 |
|
References
- https://typo3.org/security/advisory/typo3-ext-sa-2026-014vendor-advisory
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