[ CVE-2026-104424 · Published 2 Oct 2026 ]
Vulnerability in ZcashFoundation zebra
CVSS 3.7
EPSS <1%No fix listed yet
[ Description ]Official description
Zebra before 6.1.0 contains an incorrect calculation vulnerability in its ZIP-317 block template selector that omits header and transaction-count size from the block budget. Attackers can place valid selectable transactions in a victim miner's mempool to shape templates into oversized blocks, causing rejection and wasted proof-of-work.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.