HIGH 8.7 NVD
CVE-2026-123560
Zebra before 7.0.0 contains an incomplete cleanup vulnerability that allows unauthenticated peers to stall initial sync by serving a forged checkpoint block bod
Zebra before 7.0.0 contains an incomplete cleanup vulnerability that allows unauthenticated peers to stall initial sync by serving a forged checkpoint block body. Attackers can supply a body with forged authorizing data near the final checkpoint, leaving rejected hashes in the sent-hash set so the node stops requesting blocks until restart.
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-9hq5-pfgc-cx5h
- https://www.vulncheck.com/advisories/zebra-before-7.0.0-sync-denial-of-service-via-forged-
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-11-08 via NVD.
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