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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-104427

Zebra before 6.1.0 Chain Stall via Stale parent_error_map Entry

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

ZcashFoundation zebra

Default version status: unaffected

  • 0 to < 6.1.0affected
  • 6.1.0unaffected
pkg:cargo/zebrad

References