sm-crypto: Predictable SM2 key generation in Node.js: default RNG uses Math.random + wall clock

Summary sm-crypto npm package 0.4.0, the latest release, published 2026-01-20 generates SM2 private keys and signing ephemeral scalars from a single module-wide RNG instance src/sm2/utils.js: const rng = new SecureRandom. SecureRandom is jsbn's PRNG, which seeds an ARC4 stream from...

GHSA-49XC-52MP-CC9J nimiq-blockchain is missing a wall-clock upper bound on block timestamps

Impact Block timestamp validation enforces that timestamp = parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MINPRODUCERTIMEOUT for skip blocks, but there is no visible upper bound check against the wall clock. A malicious block-producing validator can set block timestamps...

nimiq-blockchain is missing a wall-clock upper bound on block timestamps

Impact Block timestamp validation enforces that timestamp = parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MINPRODUCERTIMEOUT for skip blocks, but there is no visible upper bound check against the wall clock. A malicious block-producing validator can set block timestamps...

CVE-2026-40093 nimiq-blockchain is missing a wall-clock upper bound on block timestamps

nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In 1.3.0 and earlier, block timestamp validation enforces that timestamp = parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MINPRODUCERTIMEOUT for skip blocks, but there is no visible upper...

CVE-2026-40093 nimiq-blockchain is missing a wall-clock upper bound on block timestamps

nimiq-blockchain provides persistent block storage for Nimiq's Rust implementation. In 1.3.0 and earlier, block timestamp validation enforces that timestamp = parent.timestamp for non-skip blocks and timestamp == parent.timestamp + MINPRODUCERTIMEOUT for skip blocks, but there is no visible upper...