CVE-2026-44498 ZEBRA: Block Validator Undercounts Coinbase and P2SH Sigops

ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, 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...

CVE-2026-44498

ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, 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...

CVE-2026-44498: Incorrect Calculation

ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, 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...

PYSEC-2018-150

Hyperledger Iroha versions v1.0beta and v1.0.0beta-1 are vulnerable to transaction and block signature verification bypass in the transaction and block validator allowing a single node to sign a transaction and/or block multiple times, each with a random nonce, and have other validating nodes...

CVE-2018-3756

Hyperledger Iroha versions v1.0beta and v1.0.0beta-1 are vulnerable to transaction and block signature verification bypass in the transaction and block validator allowing a single node to sign a transaction and/or block multiple times, each with a random nonce, and have other validating nodes...

CVE-2018-3756

Hyperledger Iroha versions v1.0beta and v1.0.0beta-1 are vulnerable to transaction and block signature verification bypass in the transaction and block validator allowing a single node to sign a transaction and/or block multiple times, each with a random nonce, and have other validating nodes...

CVE-2018-3756

Hyperledger Iroha versions v1.0_beta and v1.0.0_beta-1 are vulnerable to a transaction and block signature verification bypass in the transaction and block validator. This flaw allows a single node to sign a transaction and/or block multiple times, each with a random nonce, and have other validat...

PT-2018-19205

Name of the Vulnerable Software and Affected Versions Hyperledger Iroha versions v1.0 beta through v1.0.0 beta-1 Description The issue allows a single node to bypass transaction and block signature verification in the transaction and block validator. This can be achieved by signing a transaction...

CVE-2018-3756: Improper Verification of Cryptographic Signature

Hyperledger Iroha versions v1.0beta and v1.0.0beta-1 are vulnerable to transaction and block signature verification bypass in the transaction and block validator allowing a single node to sign a transaction and/or block multiple times, each with a random nonce, and have other validating nodes...

PT-2018-16177

Name of the Vulnerable Software and Affected Versions Hyperledger Iroha versions v1.0 beta through v1.0.0 beta-1 Description The issue allows a single node to bypass transaction and block signature verification in the transaction and block validator. This can be achieved by signing a transaction...