CVE-2026-56675

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

Published Jul 10, 2026 CVSS 3.1 · 8.3 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-x5c9-v98j-722r 9router /v1 APIs has unauthenticated access via reverse proxy locality collapse
History
Type Values Removed Values Added
First Time appeared Decolua
Decolua 9router
Vendors & Products Decolua
Decolua 9router
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title 9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs
Weaknesses CWE-287
CWE-290
CWE-306
CWE-441
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L'}

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 10, 2026, 4:55 PM
Reserved
Jun 22, 2026, 4:39 PM
Status
Deferred
Published
Jul 10, 2026, 5:17 PM
Modified
Oct 25, 2026, 3:10 PM