CVE-2026-71851: crypto-js: Insufficient Entropy in Cryptographic Secret Generation via Vulnerable CryptoJS Dependency Chain

CryptoJS.lib.WordArray.random() in affected versions is not a cryptographically secure random number generator. Nominal requests for 128 or 256 bits of entropy produce effective search spaces of approximately 2^39 and 2^47 possibilities — small enough to enumerate on commodity hardware.

Coinspect’s Ill Bloom investigation confirmed that downstream wallet applications used this function as the entropy source for BIP39 recovery phrases.

An application is affected only if it uses the vulnerable function to generate security-sensitive values.

Merely depending on crypto-js < 4.0.0 is not sufficient to be exploitable.