HIGH 8.2 NVD
CVE-2026-104427
Zebra before 6.1.0 contains an incomplete cleanup vulnerability in the state write task that allows remote unauthenticated peers to stall node synchronization b
Zebra before 6.1.0 contains an incomplete cleanup vulnerability in the state write task that allows remote unauthenticated peers to stall node synchronization by poisoning parent_error_map. Attackers can deliver a coinbase-malleated block sharing a canonical block's hash before it propagates, causing the next canonical block to be rejected and stalling the node for roughly 2,000 blocks.
References
- https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-8gxx-hc65-vv82
- https://www.vulncheck.com/advisories/zebra-before-6.1.0-chain-stall-via-stale-parent-error
This high severity vulnerability with a CVSS score of 8.2 was published on 2026-10-02 via NVD.
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