CVE-2026-40880— Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks
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I. Basic Information for CVE-2026-40880
Vulnerability Information
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Vulnerability Title
Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 but invalid for H+2 and then mining that transaction in a block at height H+2, a miner could cause vulnerable Zebra nodes to accept an invalid block, leading to a consensus split from the rest of the Zcash network. This vulnerability is fixed in zebrad version 4.3.1 and zebra-consensus version 5.0.2.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用错误要素进行比较
Source: NVD (National Vulnerability Database)
Vulnerability Title
zebra 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
zebra是Zcash Foundation开源的一个用Rust编写的Zcash全节点实现。 zebra存在安全漏洞，该漏洞源于交易验证缓存逻辑错误，可能导致恶意矿工诱导共识分裂。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ZcashFoundation | zebrad | < 4.3.1 | - | |
| ZcashFoundation | zebra-consensus | < 5.0.2 | - |
II. Public POCs for CVE-2026-40880
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: ZcashFoundation
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ZEBRA: Block Validator Undercounts Coinbase and P2SH Sigops - CVE-2026-44497
ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type - CVE-2026-41585
ZEBRA: Denial of Service via Interrupted JSON-RPC Requests f
V. Comments for CVE-2026-40880
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