CVE-2026-56675

HIGH

9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs

Title source: cna
STIX 2.1

Description

9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2.

Scores

CVSS v3 8.3
EPSS 0.0032
EPSS Percentile 23.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-287 CWE-290 CWE-306 CWE-441
Status published
Products (1)
decolua/9router < 0.5.2
Published Jul 10, 2026
Tracked Since Jul 10, 2026