Wormsign detonated npm:auth0-acul-react-bad in a network-sandboxed environment. Observed 4 indicator(s); 3 appear novel against OTX as of submission. The malicious package was published to the npm registry and is included in our open supply-chain indicator feed. Full context, per-IOC tier classification, and the detonation card with MITRE TTPs: https://wormsign.io/portfolio/auth0-acul-react-bad. TLP:CLEAR — indicators only, no malware samples.