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 (CVE-2026-41583). Zebra, a Rust-based Zcash node, failed after a refactor to validate sighash hash-type limits for V5 (NU5) and V4 transactions. This could allow Zebra to accept/mined blocks that zcashd would reject, causing a ...

CVE-2026-41583

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...

EUVD-2026-28653

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 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 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...

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 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'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...

PT-2026-38618

Name of the Vulnerable Software and Affected Versions Zebra versions 4.3.1 through 4.3.1 Description Insufficient error handling during sighash computation can lead to consensus divergence. When an invalid sighash type is encountered, the system fails to return an error, leaving the input sighash...

PT-2026-38619

Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit MAX BLOCK SIGOPS, 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...

A Validated Prompt Bank for Malicious Code Generation: Separating Executable Weapons from Security Knowledge in 1,554 Consensus-Labeled Prompts

Existing benchmarks of language-model refusal on malicious-coding tasks routinely conflate requests for executable malicious software with requests for harmful security knowledge. This conflation matters because the two request types plausibly trigger distinct refusal pathways in safety-aligned...

nimiq-block-production (>=0.1.0 <=0.2.0), nimiq-client (>=0.1.0 <=0.2.0) +6 more potentially affected by CVE-2026-34066 via nimiq-blockchain (>=0.1.0 <=0.2.0)

nimiq-blockchain CARGO version =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.2.0 Source cves: CVE-2026-34066 Source advisory: OSV:GHSA-J99G-7RQW-Q9JG...

nimiq-accounts (>=0.1.0 <=0.2.0), nimiq-block-production (>=0.1.0 <=0.2.0) +11 more potentially affected by CVE-2026-33471 via nimiq-block (>=0.1.0 <=0.2.0)

nimiq-block CARGO version =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.2.0 Source cves: CVE-2026-33471 Source advisory: OSV:GHSA-6973-8887-87FF...

CVE-2026-33471 nimiq-block has skip block quorum bypass via out-of-range BitSet indices & u16 truncation

nimiq-block contains block primitives to be used in Nimiq's Rust implementation. SkipBlockProof::verify computes its quorum check using BitSet.len, then iterates BitSet indices and casts each usize index to u16 slot as u16 for slot lookup. Prior to version 1.3.0, if an attacker can get a...

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-2026-40880 Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks

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-2026-40880

The CVE-2026-40880 issue affects Zebra (Zcash node) prior to Zebrad 4.3.1 and zebra-consensus 5.0.2. A logic error in Zebra’s transaction verification cache allowed a malicious miner to exploit height-dependent validity (e.g., an expiry height or upgrade) by submitting a transaction valid at heig...