CVE-2026-25923
CriticalSummary
my little forum to forum internetowe oparte na PHP i MySQL, które wyświetla wiadomości w klasycznym widoku wątków. Przed wersją 20260208.1 aplikacja nie filtruje protokołu phar:// w walidacji URL, co pozwala atakującym na przesyłanie złośliwych plików Phar Polyglot (przebranych za JPEG) za pomocą funkcji przesyłania obrazów, co prowadzi do deserializacji Phar poprzez przetwarzanie tagu BBCode [img] i umożliwia usunięcie dowolnych plików.
Risk Assessment
Podatność ta stwarza poważne ryzyko dla organizacji, umożliwiając atakującym usunięcie dowolnych plików na serwerze, co może prowadzić do utraty danych i zakłócenia działania systemu.
Recommendation
Zaleca się aktualizację aplikacji do wersji 20260208.1 lub nowszej, aby usunąć tę podatność oraz wdrożenie dodatkowych środków zabezpieczających w celu ochrony przed podobnymi atakami.
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Original NVD description (English source)
my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot file (disguised as JPEG) via the image upload feature, trigger Phar deserialization through BBCode [img] tag processing, and exploit Smarty 4.1.0 POP chain to achieve arbitrary file deletion. This vulnerability is fixed in 20260208.1.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS