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CRITICAL

CVE-2026-59801

CVSS v3

9.8

CRITICAL

EPSS Score

2.9 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

9Router through version 0.4.41 contains an unauthenticated access vulnerability that allows remote attackers to interact with provider management API endpoints by sending requests without any credentials due to missing authentication middleware in the Next.js API routes under src/app/api/providers/*. Attackers can enumerate, create, modify, or delete provider connections to expose partial credentials, OAuth tokens, and API keys, redirect AI traffic to attacker-controlled servers, or cause comple

Technical details

Published
2026-07-13
Last Modified
2026-07-14

Frequently asked questions

What is CVE-2026-59801?

9Router through version 0.4.41 contains an unauthenticated access vulnerability that allows remote attackers to interact with provider management API endpoints by sending requests without any credentials due to missing authentication middleware in the Next.js API routes under src/app/api/providers/*. Attackers can enumerate, create, modify, or delete provider connections to expose partial credentials, OAuth tokens, and API keys, redirect AI traffic to attacker-controlled servers, or cause comple

Is CVE-2026-59801 actively exploited?

Active exploitation of CVE-2026-59801 has not been confirmed. Its EPSS score was 2.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-59801?

CVE-2026-59801 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2026-59801 affecting your environment?

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