Threats Tagged 'cve-2026-52735'
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Threats Tagged 'cve-2026-52735'
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GHSA-gf9r-m956-97qx: zebrad has consensus divergence via P2SH sigop undercount in pure-Rust disabled-opcode parserCVE-2026-52735 0 A consensus divergence vulnerability exists in zebrad up to and including v4.4.1 due to an incorrect P2SH sigop counting implementation in its pure-Rust disabled-opcode parser. This causes Zebra nodes to accept blocks that zcashd nodes reject when the block-wide MAX_BLOCK_SIGOPS threshold is exceeded on one side but not the other. An attacker can exploit this by broadcasting transactions with malicious redeem scripts containing disabled opcodes followed by sigops, causing a chain split between Zebra and zcashd validators. The issue is patched in Zebra 4.4.2 by routing the P2SH sigop counter through the same C++ FFI used by the legacy sigop counter. No configuration workaround exists; upgrading is required to remediate. Join the discussion | GCVE Database | 07/02/2026, 19:43:36 UTC Added: 07/02/2026, 22:56:54 UTC |
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