MEDIUM 6.3 NVD
CVE-2026-104424
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
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.
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-95m2-vx53-v2jw
- https://www.vulncheck.com/advisories/zebra-before-6.1.0-incorrect-block-size-calculation-i
This medium severity vulnerability with a CVSS score of 6.3 was published on 2026-10-02 via NVD.
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