CVE-2026-44368 PyQuorum: Timing side‑channel in mul_mod

PyQuorum is a cryptographic library for secret sharing and key management. Prior to 0.2.1, the mulmod function implements multiplication via a binary expansion loop whose execution time depends on the Hamming weight of the second operand the exponent. An attacker who can measure the time of...

GHSA-7F6P-PHW2-8253 Taurus multi-party-sig has OT-based ECDSA protocol implementation flaws

Coinbase researchers reported 2 security issues in our implementation of the oblivious transfer OT based protocol DKLS: 1. Secret share recovery attack If the base OT setup of the protocol is reused for another execution of the OT extension, then a malicious participant can extract a bit of the...

Taurus multi-party-sig has OT-based ECDSA protocol implementation flaws

Coinbase researchers reported 2 security issues in our implementation of the oblivious transfer OT based protocol DKLS: 1. Secret share recovery attack If the base OT setup of the protocol is reused for another execution of the OT extension, then a malicious participant can extract a bit of the...