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      <title>CVE-2026-104419 — Zebra before 6.3.0 Honest Peer Banning via Far-Ahead FindBlocks Hashes</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-104419</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; ZcashFoundation zebra&lt;/p&gt;
&lt;p&gt;Zebra (zebrad) 4.5.0 before 6.3.0 discards which peer supplied the block hashes in FindBlocks responses, then assigns 100 misbehavior points, the ban threshold, to whichever peer serves a requested block more than 50,000 heights above the tip. A remote peer can return real far-ahead hashes to a syncing node so that honest peers get banned, eroding its peer set and raising eclipse risk.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; ZcashFoundation zebra&lt;/p&gt;
&lt;p&gt;Zebra (zebrad) 4.5.0 before 6.3.0 discards which peer supplied the block hashes in FindBlocks responses, then assigns 100 misbehavior points, the ban threshold, to whichever peer serves a requested block more than 50,000 heights above the tip. A remote peer can return real far-ahead hashes to a syncing node so that honest peers get banned, eroding its peer set and raising eclipse risk.&lt;/p&gt;</content:encoded>
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