According to Mars Finance, Decrypt reported that the Zcash Foundation disclosed a critical vulnerability in the Zcash Orchard privacy pool circuit, discovered on May 29 by security researcher Taylor Hornby, which could theoretically enable double-spending. Within five days, the Zcash Open Development Lab and the Foundation implemented a two-phase emergency response: first, temporarily freezing all Orchard transactions via an emergency soft fork, followed by a hard fork upgrade named NU6.2 to repair the zero-knowledge proof verification key and restore functionality. The team stated that the built-in “turnstile” mechanism showed no signs of inflation or attack, with blocks continuing to be produced normally on-chain; only block explorers briefly failed to read the chain during node upgrades. The official urged all nodes to immediately upgrade to Zebra 5.0. ZEC is currently trading at approximately $629, up over 10% in the past 24 hours and more than 53% over the past 30 days.
Zcash Completes Its Largest Network Upgrade to Address the Orchard Privacy Pool Vulnerability
MarsBitShare
Summary
Zcash has completed its largest network upgrade to address a critical vulnerability in the Orchard privacy pool’s zero-knowledge proof (ZKP) circuit, which could have enabled double-spending. Security researcher Taylor Hornby identified the flaw on May 29. The Zcash Open Development Lab and Foundation implemented a two-phase plan: a soft fork temporarily suspended Orchard transactions, followed by a hard fork named NU6.2 to repair the ZKP verification key and restore operations. The team confirmed the 'turnstile' mechanism remained secure, with no inflation or attacks detected. Node upgrades briefly disrupted blockchain explorers, but the chain continued producing blocks normally. The Zcash Foundation urged all nodes to upgrade to Zebra 5.0 immediately.
Source:Show original
Disclaimer: The information on this page may have been obtained from third parties and does not necessarily reflect the views or opinions of KuCoin. This content is provided for general informational purposes only, without any representation or warranty of any kind, nor shall it be construed as financial or investment advice. KuCoin shall not be liable for any errors or omissions, or for any outcomes resulting from the use of this information.
Investments in digital assets can be risky. Please carefully evaluate the risks of a product and your risk tolerance based on your own financial circumstances. For more information, please refer to our Terms of Use and Risk Disclosure.