Zcash Foundation Releases Zebra 4.5.3 and 5.0.0 to Address Critical Orchard Vulnerability via Emergency Soft Fork and NU 6.2
The Zcash Foundation released Zebra versions 4.5.3 and 5.0.0 to address a critical soundness vulnerability in the Orchard zero-knowledge proof circuit. Version 4.5.3 temporarily disables Orchard operations via an emergency soft fork, while version 5.0.0 activates NU 6.2, re-enables Orchard using the patched circuit, and permanently closes the vulnerability.
