cggmp24 and cggmp21 are vulnerable to signature forgery through altered presignatures

Impact This attack is against presignatures used in very specific context: Presignatures + HD wallets derivation: security level reduces to 85 bits \ Previously users could generate a presignature, and then choose a HD derivation path while issuing a partial signature via...

CGGMP21 presignatures can be used in the way that significantly reduces security

This attack is against presignatures used in very specific context: Presignatures + HD wallets derivation: security level reduces to 85 bits \ Previously you could generate a presignature, and then choose a HD derivation path while issuing a partial signature via Presignature::setderivationpath,...

PT-2025-48045

Name of the Vulnerable Software and Affected Versions cggmp21 versions 0.6.3 and earlier cggmp24 version 0.7.0-alpha.1 Description The software is susceptible to a security issue related to the use of presignatures in specific contexts. Specifically, using presignatures in conjunction with HD...