CVE-2026-41583 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-script version 5.0.2, after a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network...

CVE-2026-41583 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-script version 5.0.2, after a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network...

CVE-2026-41583 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and prior to zebra-script version 5.0.2, after a refactoring, Zebra failed to validate a consensus rule that restricted the possible values of sighash hash types for V5 transactions which were enabled in the NU5 network...

zebra 安全漏洞

Zebra is an open-source Zcash implementation built using Rust by the Zcash Foundation. Versions of Zebra prior to 4.3.1 contained a security vulnerability. This vulnerability occurred when the rk field in Orchard transactions was set to an identity value, causing the Orchard crate to crash and...

zebra 安全漏洞

Zebra is an open-source Zcash implementation built using Rust by the Zcash Foundation. Versions of Zebra prior to 4.4.0 contained security vulnerabilities. These vulnerabilities stemmed from excessive buffer sizes allocated for multiple inbound deserialization paths, which could allow attackers t...

zebra 安全漏洞

Zebra is an open-source Zcash implementation built with Rust by the Zcash Foundation. Versions of Zebra prior to 4.4.0 contained security vulnerabilities; these vulnerabilities stemmed from the block verifier underestimating the number of transparent signature operations, which could lead to...

zebra 数据伪造问题漏洞

Zebra is an open-source Zcash implementation built with Rust by the Zcash Foundation. Versions of Zebra prior to 4.4.0 had a data forgery vulnerability, which stemmed from insufficient error handling when sighash types were invalid, potentially leading to consensus splits...

zebra 安全漏洞

Zebra is an open-source Zcash implementation built using Rust by the Zcash Foundation. There were security vulnerabilities in versions 2.2.0 to 4.3.1 of Zebra. These vulnerabilities stemmed from the JSON-RPC HTTP middleware disconnecting connections when the request body was not fully received,...

PT-2026-39149

Name of the Vulnerable Software and Affected Versions ZEBRA versions prior to 4.4.0 Description A composite denial-of-service issue in the block discovery pipeline allows an unauthenticated remote attacker to permanently stop all new block discovery on a targeted node. The attack leverages three...

zebra 安全漏洞

Zebra is an open-source implementation of Zcash full node written in Rust by the Zcash Foundation. Versions of Zebra prior to 4.4.0 contained a security vulnerability, which was caused by a combined denial-of-service vulnerability in the block discovery pipeline. This vulnerability could allow...

zebra 安全漏洞

Zebra is an open-source Zcash implementation built using Rust by the Zcash Foundation. Versions of Zebra prior to 4.3.1 contained security vulnerabilities. These vulnerabilities stemmed from the use of sighash hash types for V5 transactions and the standard hash type used for V4 transactions, whi...

Zebra's Transparent SIGHASH_SINGLE Handling Diverges from zcashd for Corresponding Outputs

Zebra Transparent SIGHASHSINGLE Corresponding-Output Handling Diverges From zcashd Summary For V5+ transparent spends, Zebra and zcashd disagree on the same consensus rule: SIGHASHSINGLE must fail when the input index has no corresponding output. zcashd treats this as consensus-invalid under...

GHSA-GQ4H-3GRW-2RHV Zebra has Consensus Divergence in Transparent Sighash Hash-Type Handling due to Stale Buffer

CVE-2026-44497: Consensus Divergence in Transparent Sighash Hash-Type Handling due to Stale Buffer Summary The fix for https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-8m29-fpq5-89jj introduced a separate issue due to insuficient error handling of the case where the sighash type ...

Zebra Vulnerable to Allocation Amplification in Inbound Network Deserializers

CVE-2026-44500: Allocation Amplification in Inbound Network Deserializers Summary Several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or...

GHSA-438Q-JX8F-CCCV Zebra Vulnerable to Allocation Amplification in Inbound Network Deserializers

CVE-2026-44500: Allocation Amplification in Inbound Network Deserializers Summary Several inbound deserialization paths in Zebra allocated buffers sized against generic transport or block-size ceilings before the tighter protocol or consensus limits were enforced. An unauthenticated or...

GHSA-JV4H-J224-23CC Zebra's Block Validator Undercounts Coinbase and P2SH Sigops

Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit MAXBLOCKSIGOPS, allowing it to accept blocks that zcashd rejects with bad-blk-sigops. A miner who produces such a block can split the network: Zebra nodes follow the offending chain while zcas...

Zebra's Block Validator Undercounts Coinbase and P2SH Sigops

Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit MAXBLOCKSIGOPS, allowing it to accept blocks that zcashd rejects with bad-blk-sigops. A miner who produces such a block can split the network: Zebra nodes follow the offending chain while zcas...

CVE-2026-40880

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.1 and zebra-consensus version 5.0.2, a logic error in Zebra's transaction verification cache could allow a malicious miner to induce a consensus split. By carefully submitting a transaction that is valid for height H+1 bu...

CVE-2026-40881

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-network version 5.0.1, when deserializing addr or addrv2 messages, which contain vectors of addresses, Zebra would fully deserialize them up to a maximum length over 233,000 that was derived from the 2 MiB...

CVE-2026-40881 Zebra: addr/addrv2 Deserialization Resource Exhaustion

ZEBRA is a Zcash node written entirely in Rust. Prior to zebrad version 4.3.0 and zebra-network version 5.0.1, when deserializing addr or addrv2 messages, which contain vectors of addresses, Zebra would fully deserialize them up to a maximum length over 233,000 that was derived from the 2 MiB...