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CVE-2026-119423

Publié : 30 octobre 2026
Modifié : 30 octobre 2026
Lien officiel NVD
Score CVSS
5.3
MEDIUM

Description détaillée

OPNsense core before 26.7.8 contains a log injection vulnerability that allows unauthenticated attackers to plant victim IP addresses in the lockout_handler by submitting crafted WebGUI login usernames. Attackers can submit usernames like 'Invalid user <victim-ip>' repeatedly to add the victim to the sshlockout table, blocking SSH and WebGUI access and killing its pf states.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Références et Patchs

https://abraxaslabs.tech/research/opnsense-lockout-factory-iphttps://github.com/opnsense/corehttps://github.com/opnsense/core/blob/26.7.7/src/opnsense/mvc/app/library/OPNsense/Auth/AuthenticationFactory.php#L232https://github.com/opnsense/core/blob/26.7.7/src/opnsense/scripts/syslog/lockout_handler#L70https://github.com/opnsense/core/commit/14f8f7dd1d5f06522d60794a7beeac7adb9eca68https://github.com/opnsense/core/commit/2076f2c195bf9537ec220f0e5d6aff998f057410https://github.com/opnsense/core/security/advisories/GHSA-2v2x-m4j7-76pvhttps://www.vulncheck.com/advisories/opnsense-core-before-26.7.8-lockout-ip-planting-via-webgui-login-username

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