Threats Tagged 'cve-2026-52736'
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Threats Tagged 'cve-2026-52736'
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GHSA-4m69-67m6-prqp: Zebra has block suppression via NU5 same-header body poisoning of sent-hash cacheCVE-2026-52736 0 Zebra versions up to and including 4.4.1 are vulnerable to a block suppression attack via poisoned block bodies that share a header hash with valid blocks. A remote unauthenticated peer can cause the node to cache a rejected block hash, leading the node to treat the later valid block as a duplicate and stall progress at a specific block height. This results in the node being unable to advance until restarted or a rare reorganization occurs. The vulnerability exploits the way Zebra caches block hashes before validation and does not remove them on validation failure. The issue is patched in Zebra 4.4.2. Join the discussion | GCVE Database | 07/02/2026, 19:43:08 UTC Added: 07/02/2026, 22:56:55 UTC |
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