CVE-2026-23965
HighSummary
W bibliotece sm-crypto, która implementuje chińskie algorytmy kryptograficzne SM2, SM3 i SM4, występuje podatność na fałszowanie podpisów w logice weryfikacji podpisów SM2 przed wersją 0.4.0. Atakujący może sfałszować ważne podpisy dla dowolnych kluczy publicznych przy domyślnych konfiguracjach.
Risk Assessment
Podatność ta może prowadzić do nieautoryzowanego dostępu lub manipulacji danymi, co stwarza poważne zagrożenie dla integralności systemów korzystających z tych algorytmów kryptograficznych.
Recommendation
Zaleca się aktualizację biblioteki sm-crypto do wersji 0.4.0 lub nowszej, aby usunąć tę podatność i zabezpieczyć system przed potencjalnymi atakami.
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Original NVD description (English source)
sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A signature forgery vulnerability exists in the SM2 signature verification logic of sm-crypto prior to version 0.4.0. Under default configurations, an attacker can forge valid signatures for arbitrary public keys. If the message space contains sufficient redundancy, the attacker can fix the prefix of the message associated with the forged signature to satisfy specific formatting requirements. Version 0.4.0 patches the issue.

