CVE-2026-123554

7.5 HIGHpublic exploit available

Published 2026-11-08 · Updated 2026-11-09

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

Zebra zebrad 6.4.0 before 7.0.0 performs quadratic work in the mempool coinbase-maturity check because Transaction::coinbase_spend_restriction() rebuilds the transaction's output list once per spent outpoint. Any connected peer can repeatedly send unsigned transactions with many transparent inputs and outputs, which are rejected without a misbehavior score, to pin verification threads.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-407

Public exploit & PoC references

https://github.com/ZcashFoundation/zebra/commit/08743d669b33a19bce2a5d54001bd468c03a196e
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-7jp4-mq53-4cvq

All references

https://github.com/ZcashFoundation/zebra/commit/08743d669b33a19bce2a5d54001bd468c03a196e
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-7jp4-mq53-4cvq
https://www.vulncheck.com/advisories/zebra-zebrad-6.4.0-before-7.0.0-denial-of-service-via-mempool-coinbase-maturity-check

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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