CVE-2026-77138 (GCVE-0-2026-77138)

Vulnerability from cvelistv5 – Published: 2026-08-25 09:00 – Updated: 2026-08-25 14:05
VLAI
Title
Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)
Summary
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.
Severity
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
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:04 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
TYPO3 CNA under the mitre root
CNA scorecard B 84/100 over 53 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
TYPO3 Extension "HTML5 Video Player vs. Powermail" Affected: 0 , ≤ 0.2.1 (semver)
guessed Create a notification for this product.
Date Public
2026-08-25 09:00
Credits
Torben Hansen
Show details on NVD website
To clipboard 

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