CVE-2026-104428
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Oct 02, 2026
Vendor
unknown
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.