CVE-2026-109364

Zebra 2.3.0 before 6.4.0 contains a protection mechanism failure that allows unauthenticated peers to evade bans because bans and misbehavior scores are keyed on exact IP addresses. Attackers can reconnect from fresh IPv6 addresses in their /64 allocation or flush the 20,000-entry FIFO ban list to restore access for banned peers.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-jhpp-8h75-7pv5
https://www.vulncheck.com/advisories/zebra-2.3.0-before-6.4.0-peer-ban-bypass-via-exact-ip-keying

Configurations

No configuration.

History

12 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 17:17

Updated : 2026-10-15 20:31

NVD link : CVE-2026-109364

Mitre link : CVE-2026-109364

CVE.ORG link : CVE-2026-109364

JSON object : View

Products Affected

No product.

CWE

CWE-693

Protection Mechanism Failure

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