CVE-2026-109365

LowCVSS 3.7/10Last modified Oct 15, 2026

Description

Zebra before 6.4.0 contains an uncontrolled resource consumption vulnerability that allows unauthenticated peers to force full proof verification by serving forged block bodies with valid header hashes. Attackers can flip authorizing-only bytes such as a coinbase scriptSig, wasting Sapling, Orchard, and Ironwood proof verification without penalty and stalling sync for 67 seconds.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-345

Affected software

No affected versions have been published.

Timeline

Published
Oct 12, 2026
Last modified
Oct 15, 2026
NVD status
Deferred

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