OCTOBER 13, 2026
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Case File

CVE-2026-109366

LOW · CVSS 3.7 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-10-12 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

Zebra versions prior to 6.4.0 are vulnerable to an improper integrity validation issue in the inbound gossip download path, allowing unauthenticated peers to manipulate block validation. This vulnerability can lead to the dropping of new blocks, hindering consensus and delaying tip discovery for mining operations. Organizations utilizing Zebra for blockchain operations should prioritize upgrading to mitigate potential disruptions in their mining processes.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-109366
Severity
LOW
CVSS
3.7
EPSS
N/A

Original NVD Description

Zebra before 6.4.0 contains an improper integrity validation vulnerability in the inbound gossip download path that allows unauthenticated peers to force dropping of new blocks without penalty. Attackers can serve a real block with a coinbase scriptSig rewritten to height 1, which keeps the ZIP-244 block hash, triggering a behind-tip drop before consensus validation and delaying tip discovery for mining backends.