CVE-2026-109365
LOW
NVD
CVSS Score
3.7
Severity
LOW
Published
Oct 12, 2026
Vendor
unknown
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.