Zebra 4.5.3 and 5.0.0: Emergency Soft Fork and NU6.2 Activation
We have recently released Zebra 4.5.3 and Zebra 5.0.0. These two releases work together to address a critical bug in the Orchard Action circuit: 4.5.3 implemented an emergency soft fork that temporarily disabled Orchard actions while the fix was being prepared, and 5.0.0 activated NU6.2, which re-enables Orchard using the corrected circuit. We strongly urge […]
Zcash Foundation Q1 2026 Report
The Zcash Foundation is committed to transparency and openness with the Zcash community and our other stakeholders. Today, we are releasing our Q1 2026 report, which provides an overview of the work undertaken by our engineering team, as well as an overview of other activities during this period. As with our previous quarterly reports, this […]
Zebra 4.4.1: Critical Security Fix
We are releasing Zebra 4.4.1 today. This release contains a fix for a consensus-critical security vulnerability, and we strongly encourage all node operators to upgrade immediately. You can update directly to it if you have not updated for the last couple of releases. Note that the 4.4.0 release was just three days ago. If you […]
Zebra 4.4.0: Critical Security Fixes
We are releasing Zebra 4.4.0 today. This release contains fixes for multiple security vulnerabilities, including several consensus-critical issues, and we strongly encourage all node operators to upgrade immediately. Security Advisories GHSA-28xj-328h-72vm: Permanent Block Discovery Halt via Gossip Queue Saturation + Syncer Poisoning Zebra’s block discovery pipeline contained a composite denial-of-service vulnerability that allowed a remote […]
FROST Release v3.0.0
We have just released FROST v3.0.0. You can find frost-core and the ciphersuite crates available on crates.io. This stable release follows v3.0.0-rc.0, which introduced the bulk of the changes in this major version. If you are upgrading from v2.x, please read the RC release post for the full picture—the changes described here are what’s new […]
Zebra 4.2.0 Release
Zcash Foundation is pleased to announce Zebra 4.2.0. This release expands RPC functionality, strengthens mempool policy compliance, and adds deeper state querying capabilities. This release also completes the migration to OpenRPC for API documentation and moves the Python QA test framework to the standalone integration-tests repository. What’s New in 4.2.0 RPC: A More Complete Interface […]
Zcash Foundation Q4 2025 Report
The Zcash Foundation is committed to transparency and openness with the Zcash community and our other stakeholders. Today, we are releasing our Q4 2025 report, which provides an overview of the work undertaken by our engineering team, as well as an overview of other activities during this period. As with our previous quarterly reports, this […]
Embracing AI, Protecting Privacy: How Zebra Approaches AI-Assisted Contributions
AI coding tools are changing how open source software gets built. At Zcash Foundation, we’ve seen this firsthand: AI-assisted contributions have helped us ship features faster, enabled contributors who are new to Rust or to the Zcash protocol to make meaningful contributions, and accelerated our development velocity across four major releases—in the last three months […]
Zebra 4.1.0 Release
The Zcash Foundation is pleased to announce Zebra 4.1.0, a release focused on expanding observability with comprehensive Prometheus metrics and Grafana dashboards, while strengthening mempool compliance with zcashd. This release contains no breaking changes for node operators. What’s New in 4.1.0 Observability: See Inside Your Node Zebra 4.1.0 significantly expands monitoring capabilities to give operators […]
FROST Release v3.0.0-rc.0
We have just released FROST v3.0.0-rc.0. The main changes in this release have been changing the cheater detection feature to allow specifying as a function parameter instead of a compile-time feature, a big refactor of the repair share and refresh share functionality, improving our test coverage for serialisation and async, and some significant improvements to […]