Zebra: Finalized address balance credit-first overflow on consensus-valid blocks
Zebra: Finalized address balance credit-first overflow on consensus-valid blocks. You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node processes blocks on any Zcash network. The finalized transparent address balance writer processes all newly-created outputs (credits) before processing spent outputs (debits) within the same block.
Vuln-watch · relayed from the GitHub Advisory Database; see Source & attribution below
Summary
You are affected if: 1. You run zebrad up to and including v4.4.1. 2. Your node processes blocks on any Zcash network. The finalized transparent address balance writer processes all newly-created outputs (credits) before processing spent outputs (debits) within the same block.
Affected
- zebra-state (rust) <= 6.0.0 — fixed in 7.0.0
- zebrad (rust) <= 4.4.1 — fixed in 4.5.0
Severity
Medium (CVSS 6.9), as rated by the upstream advisory.
Recommended actions
- Upgrade zebra-state to 7.0.0 or later
- Upgrade zebrad to 4.5.0 or later
Source & attribution
This 0xCERT advisory summarises GHSA-w834-cf6p-9m9w / CVE-2026-52738 from the GitHub Advisory Database, credited upstream to sangsoo-osec, mpguerra, oxarbitrage: https://github.com/advisories/GHSA-w834-cf6p-9m9w. Details may change; refer to the original source for the authoritative record.
References
OpenPGP-signed. The signed text of this advisory verifies against the 0xCERT key CCC7 D9EC 9415 723D.
Published 2026-07-02 · last updated 2026-10-08
curl -s https://www.0xcert.com/pgp.asc | gpg --import && curl -s https://www.0xcert.com/advisory/0xCERT-2026-0207/signed.txt | gpg --verify