CVE-2026-34202

The record

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-chain version 6.0.1, a vulnerability in Zebra's transaction processing logic allows a remote, unauthenticated attacker to cause a Zebra node to panic (crash). This is triggered by sending a specially crafted V5 transaction that passes initial deserialization but fails during transaction ID calculation. This issue has been patched in zebrad version 4.3.0 and zebra-chain version 6.0.1.

Affected packages

Related vulnerabilities

• GHSA-qp6f-w4r3-h8wg Zebra node crash — V5 transaction hash panic (P2P reachable) Same vulnerability
• CVE-2026-44500 ZEBRA is a Zcash node written entirely in Rust. Also affects zebra-chain
• CVE-2026-41584 ZEBRA is a Zcash node written entirely in Rust. Also affects zebra-chain
• GHSA-438q-jx8f-cccv Zebra Vulnerable to Allocation Amplification in Inbound Network Deserializers Also affects zebra-chain
• GHSA-452v-w3gx-72wg Zebra has rk Identity Point Panic in Transaction Verification Also affects zebra-chain
• GHSA-h9hm-m2xj-4rq9 Zebra has Permanent Block Discovery Halt via Gossip Queue Saturation and Syncer Poisoning Also affects zebrad
• GHSA-pvmv-cwg8-v6c8 Zebra v4.4.0 still accepts V5 SIGHASH_SINGLE without a corresponding output Also affects zebrad
• CVE-2026-44499 ZEBRA is a Zcash node written entirely in Rust. Also affects zebrad