CVE-2026-56677

9Router: Authenticated Server-Side Request Forgery (SSRF) via OIDC Provider Test Endpoint

HIGH
8.6
CVSS Score
Published: August 17, 2026 at 09:14 PM UTC
Updated: October 23, 2026 at 04:10 PM UTC
1 product affected across 1 vendor9Router

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Severity
HIGH8.6
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

9Router is an AI router & token saver. In 0.5.4 and earlier, the POST /api/auth/oidc/test endpoint in src/app/api/auth/oidc/test/route.js passes the user-controlled issuerUrl parameter to fetchOidcDiscovery() in src/lib/auth/oidc.js without restricting private or loopback destinations, allowing unauthenticated attackers when dashboard login is disabled to scan internal services and reflect OIDC discovery fields including token_endpoint and jwks_uri.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

<= 0.5.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-306CWE-918

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