PT-2026-55424

Am I affected You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node processes blocks on any Zcash network. Summary The finalized transparent address balance writer processes all newly-created outputs credits before processing spent outputs debits within the same block. A...

PT-2026-55471

Name of the Vulnerable Software and Affected Versions Zebra versions prior to 4.4.2 Description Zebra can accept blocks that the zcashd reference implementation rejects due to a discrepancy in how P2SH Pay-to-Script-Hash signature-operation counters handle disabled opcodes. In the...

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...