threshold-vulnerability

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vulnerability

A cross-chain messaging protocol's signature verification can be bypassed when a new domain is added: if enrollValidator is called before setThreshold, the commitment is saved with threshold=0, allowing attackers to frontrun setThreshold and process unsigned messages with a malicious commitment hash matching the stored zero-threshold commitment.

Heuss Immunefi ECDSA
medium.com · Heuss · 19 hours ago · details