CVE-2026-109364CWE-693

CVE-2026-109364

Medium · published October 12, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
13.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00235 · 13.6th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2026-10-12T21:17Z
References (2)
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-jhpp-8h75-7pv5 · [email protected]https://www.vulncheck.com/advisories/zebra-2.3.0-before-6.4.0-peer-ban-bypass-via-exact-ip-keying · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:05Z
    Zebra 2.3.0 before 6.4.0 Peer Ban Bypass via Exact-IP Keying
    cvelistv5
  • 12 OCT 16:05Z
    Zebra 2.3.0 before 6.4.0 Peer Ban Bypass via Exact-IP Keying
    cvelistv5