CVE-2026-104428

MediumCVSS 5.3/10Last modified Oct 6, 2026

Description

The getblock RPC method in zebra-rpc before 11.0.0, used by the Zcash Foundation's Zebra node, panics on verbosity 2 for a side-chain block because the block's -1 confirmations sentinel is converted to u32 with .expect(), aborting the process. Remote unauthenticated attackers, directly or through lightwalletd, can repeat this call to keep the node in a crash loop.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-617

Affected software

No affected versions have been published.

Timeline

Published: Oct 2, 2026
Last modified: Oct 6, 2026
NVD status: Deferred

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