Orchard Vulnerability Successfully Remediated

The Zcash Open Development Lab's (ZODL) account of the emergency response to the Orchard vulnerability, published as an X article. It describes a coordinated network upgrade launched the evening of Monday, 1 June 2026 that paused Orchard transactions while engineers built and tested a fix, with remediation reported complete shortly after. It records who participated in the response and what the upgrade changed.

It appears in this topic as the operational record of how Zcash's contributors coordinated a fast emergency fix once the bug was known — the counterpart to the disclosure that explains what was being fixed.