CVE-2026-104420

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 bloc...

EUVD-2026-91431

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 bloc...

CVE-2026-104420

The Zebra software (versions before 6.3.0 ) contains a protection mechanism failure that allows unauthenticated peers to evade misbehavior scoring. The vulnerability occurs during an inbound cleanup step where the system wrongly downcasts RouterError to VerifyBlockError , causing the associated s...