CVE-2026-104419

MediumCVSS 4.8/10Last modified Oct 5, 2026

Description

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.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-345

Affected software

No affected versions have been published.

Timeline

Published: Oct 2, 2026
Last modified: Oct 5, 2026
NVD status: Deferred

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