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CVE-2026-48710 · Kludex Starlette CVE-2026-49869 · Kestra Kestra OSS CVE-2026-59822 · BerriAI LiteLLM · CVSS 8.2 CVE-2026-82329 · JFrog Artifactory

weakness type

CWE-684

1: vulnerability tracked
1: critical
18 August 2026: latest publication

cve

Vulnerability watch

idvulnerabilityseveritypublished

CVE-2026-52735ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, Zebra can accept a block that zcashd rejects because the P2SH signature-operation counter undercounts redeem scripts containing a disabled opcode followed by signature opcodes. In zebra-script/src/lib.rs, p2sh_input_sigop_count used the pure-Rust script::Code::sig_op_count path, whose try_fold parser stops at disabled opcodes such as OP_CODESEPARATOR and returns only the partial count accumulated before the error. The zcashd reference implementation continues static signature-operation counting through disabled opcodes, so an attacker can broadcast P2SH spends that Zebra counts below MAX_BLOCK_SIGOPS while zcashd counts above the 20,000-operation limit. If a Zebra miner includes those transactions, Zebra validators accept the block while zcashd validators reject it, creating a consensus chain split that affects network integrity and availability without requiring the attacker to produce a block. This issue is fixed in version 4.5.0.NVD analysis in progress Critical CVSS 9.3 18/08