PT-2026-104231 · Zcashfoundation · Zebra

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CVE-2026-104420

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Published

2026-10-02

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Updated

2026-10-02

CVSS v3.1

5.3

Medium

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Zebra before 6.3.0 contains a protection mechanism failure that allows unauthenticated peers to evade misbehavior scoring by supplying invalid gossiped blocks. The inbound cleanup step wrongly downcasts RouterError to VerifyBlockError and discards the score, so attackers can repeatedly force block download and Equihash verification without being banned.

Fix

Incorrect Type Conversion or Cast

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Weakness Enumeration

Related Identifiers

CVE-2026-104420

Affected Products

Zebra