CVE-2026-58262
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-345
Verificación insuficiente de autenticidad de los datos
Fecha de publicación:
07/08/2026
Última modificación:
07/08/2026
Descripción
*** Pendiente de traducción *** Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, header signature verification counts the unused padding bits of the PubKeysBitmap toward the two-thirds validator quorum. These padding bits do not correspond to any validator and are ignored by the actual BLS aggregate-signature check, so a malicious or compromised block producer can set them to reach the required quorum while gathering fewer genuine validator signatures than the protocol demands. As a result, nodes that import or intercept the header accept it as correctly signed without a real two-thirds quorum, weakening consensus safety and undermining finality. This issue is fixed in version 1.7.20.
Impacto
Puntuación base 4.0
7.10
Gravedad 4.0
ALTA