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...

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...

zebra 安全漏洞

Zebra is an open-source implementation of Zcash full node written in Rust by the Zcash Foundation. There is a security vulnerability in Zebra, which stems from a logical error in the transaction verification caching mechanism. This vulnerability could potentially allow malicious miners to...

GHSA-8M29-FPQ5-89JJ Zebra Vulnerable to Consensus Divergence in Transparent Sighash Hash-Type Handling

CVE-2026-41583: Consensus Divergence in Transparent Sighash Hash-Type Handling Summary 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 upgrade. Zebra nodes could thus...

Zebra Vulnerable to Consensus Divergence in Transparent Sighash Hash-Type Handling

CVE-2026-41583: Consensus Divergence in Transparent Sighash Hash-Type Handling Summary 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 upgrade. Zebra nodes could thus...

GHSA-XVJ8-PH7X-65GF Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks

CVE-2026-40880: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks Summary 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 but invalid fo...

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

CVE-2026-40880: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks Summary 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 but invalid fo...

PT-2026-37129

Name of the Vulnerable Software and Affected Versions zebrad versions prior to 4.3.1 zebra-script versions prior to 5.0.2 Description Following a refactoring of the verification process for transparent transactions, Zebra failed to validate a consensus rule restricting the possible values of...

PT-2026-33597

Name of the Vulnerable Software and Affected Versions Zebra versions prior to 4.3.1 Description A logic error in the transaction verification cache allows a malicious miner to induce a consensus split. The issue stems from a performance optimization that skips transaction validation if the...

CVE-2026-34069

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. In versions 1.2.2 and below, an unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. Sending a RequestMacroChain message where the...

CVE-2026-34069 nimiq-consensus panics via RequestMacroChain micro-block locator

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. In versions 1.2.2 and below, an unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. Sending a RequestMacroChain message where the...

CVE-2026-34069

CVE-2026-34069 affects the Rust implementation of Nimiq’s PoS consensus (nimiq/core-rs-albatross). In versions 1.2.2 and earlier, an unauthenticated p2p peer can trigger a panic in the RequestMacroChain message handler when the first locator hash on the victim’s main chain is a micro block hash (...

EUVD-2026-22160

nimiq-consensus panics via RequestMacroChain micro-block locator...

nimiq-client (>=0.1.0 <=0.2.0), nimiq-lib (>=0.1.0 <=0.2.0) +2 more potentially affected by CVE-2026-34069 via nimiq-consensus (>=0.1.0 <=0.2.0)

nimiq-consensus CARGO version =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.1.0, =0.2.0 Source cves: CVE-2026-34069 Source advisory: OSV:GHSA-48M6-486P-9J8P...

GHSA-48M6-486P-9J8P nimiq-consensus panics via RequestMacroChain micro-block locator

Impact An unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic by sending a RequestMacroChain message where the first locator hash that is on the victim’s main chain is a micro block hash not a macro block hash. In RequestMacroChain::handle, the handler selects t...

PT-2026-32505

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, an untrusted peer could crash a validator by publishing a signed tendermint proposal message where signer == validators.num validators...

PT-2026-32563

Name of the Vulnerable Software and Affected Versions nimiq/core-rs-albatross versions prior to 1.3.0 Description An unauthenticated p2p peer can cause the RequestMacroChain message handler task to panic. This occurs when a RequestMacroChain message is sent where the first locator hash on the...

CVE-2026-35468

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, two peer-facing consensus request handlers assume that the history index is always available and call blockchain.historystore.historyindex.unwr...

CVE-2026-35468

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, two peer-facing consensus request handlers assume that the history index is always available and call blockchain.historystore.historyindex.unwr...

CVE-2026-34061

nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, an elected validator proposer can send an election macro block whose header.interlink does not match the canonical next interlink. Honest...