GHSA-XVJ8-PH7X-65GF Zebra: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks

CVE-2026-40880: Cached Mempool Verification Bypasses Consensus Rules for Ahead-of-Tip Blocks Summary 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 fo...

PT-2026-33597

Name of the Vulnerable Software and Affected Versions Zebra versions prior to 4.3.1 Description A logic error in the transaction verification cache allows a malicious miner to induce a consensus split. The issue stems from a performance optimization that skips transaction validation if the...