CVE Watch7 ago 2026

CVE-2026-58262

Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.20, header signature verification counts the unused paddi

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 7 ago 2026 · Última mod.: 7 ago 2026 · CWE-345 · CWE-347

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

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