CVE-2026-23737
HighSummary
Podatność w seroval umożliwia nieprawidłowe przetwarzanie danych wejściowych w komponencie deserializacji JSON, co może prowadzić do wykonania dowolnego kodu JavaScript. Dotyczy to wersji 1.4.0 i wcześniejszych, a problem występuje w funkcjach fromJSON i fromCrossJSON w scenariuszu transmisji klient-serwer.
Risk Assessment
Wykorzystanie tej podatności może pozwolić atakującym na wykonanie niebezpiecznego kodu JavaScript, co stwarza poważne zagrożenie dla bezpieczeństwa aplikacji i danych użytkowników. Atakujący muszą przeprowadzić cztery oddzielne żądania, co zwiększa ryzyko w przypadku aplikacji z wieloma użytkownikami.
Recommendation
Zaleca się aktualizację do wersji 1.4.0 lub nowszej, aby usunąć tę podatność. Należy również przeprowadzić audyt kodu w celu zidentyfikowania potencjalnych miejsc, w których może wystąpić nieprawidłowe przetwarzanie danych wejściowych.
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Original NVD description (English source)
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, improper input handling in the JSON deserialization component can lead to arbitrary JavaScript code execution. Exploitation is possible via overriding constant value and error deserialization, allowing indirect access to unsafe JS evaluation. At minimum, attackers need the ability to perform 4 separate requests on the same function, and partial knowledge of how the serialized data is used during later runtime processing. This vulnerability affects the fromJSON and fromCrossJSON functions in a client-to-server transmission scenario. This issue has been fixed in version 1.4.0.

