CVE-2026-46540

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch adopts a fork chain whose tip is a macro block checkpoint or election, it only updates self.head but fails to update self.macrohea...

CVE-2026-46540

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch adopts a fork chain whose tip is a macro block checkpoint or election, it only updates self.head but fails to update self.macrohea...

Nimiq security vulnerabilities

Nimiq is an open-source implementation of the Albatross protocol in Rust. Versions of Nimiq prior to 1.4.0 contained security vulnerabilities. These vulnerabilities stemmed from the use of LightBlockchain::rebranch, which only updated self.head when a fork chain was adopted, without updating...

Nimiq security vulnerabilities

Nimiq is an open-source implementation of the Albatross protocol in Rust. Versions of Nimiq prior to 1.5.0 contained a security vulnerability. This vulnerability occurred when processing RequestBatchSet messages that contained the hash of the genesis block, causing Policy::macroblockbefore to cra...

CVE-2026-46543

CVE-2026-46543 (Nimiq blockchain) affects the Rust implementation

CVE-2026-46540

Nimiq light-blockchain (Rust, Albatross) had a bug in LightBlockchain::rebranch() before v1.4.0: when forking to a macro-block tip (checkpoint or election), it updated only head and did not refresh macro_head, election_head, current_validators, or store the election header. This mismatch with the...

CVE-2026-46540 Nimiq light-blockchain: Light blockchain rebranch issue

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch adopts a fork chain whose tip is a macro block checkpoint or election, it only updates self.head but fails to update self.macrohea...

EUVD-2026-35881

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch adopts a fork chain whose tip is a macro block checkpoint or election, it only updates self.head but fails to update self.macrohea...

CVE-2026-46540 Nimiq light-blockchain: Light blockchain rebranch issue

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch adopts a fork chain whose tip is a macro block checkpoint or election, it only updates self.head but fails to update self.macrohea...

PT-2026-50183

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=520318421 Crash type: Use-of-uninitialized-value Crash state: vp8 regular quantize b sse4 1 macro block yrd vp8 rd pick intra mode...

CVE-2026-34065

nimiq-primitives contains primitives e.g., block, account, transaction to be used in Nimiq's Rust implementation. Prior to version 1.3.0, an untrusted p2p peer can cause a node to panic by announcing an election macro block whose validators set contains an invalid compressed BLS voting key. Hashi...

nimiq-primitives: BlockInclusionProof interlink issue when hops are empty

Impact A logic flaw in BlockInclusionProof::isblockproven causes the function to return true without performing any cryptographic verification when getinterlinkhops yields an empty hop list. This occurs when the target block is at the election block position immediately preceding the election...

CVE-2026-34065

nimiq-primitives contains primitives e.g., block, account, transaction to be used in Nimiq's Rust implementation. Prior to version 1.3.0, an untrusted p2p peer can cause a node to panic by announcing an election macro block whose validators set contains an invalid compressed BLS voting key. Hashi...

CVE-2026-34065

CVE-2026-34065 affects nimiq-primitives in Nimiq’s Rust implementation. Before version 1.3.0, an untrusted p2p peer could cause a node to panic by announcing an election macro block whose validators set includes an invalid compressed BLS voting key. Hashing the election macro header hashes the va...

EUVD-2026-25062

nimiq-primitives: Node crash due to missing interlink validation in election macro block proposals...

CVE-2026-34065: Unchecked Return Value

nimiq-primitives contains primitives e.g., block, account, transaction to be used in Nimiq's Rust implementation. Prior to version 1.3.0, an untrusted p2p peer can cause a node to panic by announcing an election macro block whose validators set contains an invalid compressed BLS voting key. Hashi...

PT-2026-34546

Impact An untrusted p2p peer can cause a node to panic by announcing an election macro block whose validators set contains an invalid compressed BLS voting key. Hashing an election macro header hashes validators and reaches Validators::voting keys, which calls validator.voting key.uncompress.unwr...

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

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 (...

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...