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CVE-2026-59801 is a critical missing-authentication vulnerability in 9Router affecting versions through 0.4.41. The flaw exists in the Next.js provider management API routes under src/app/api/providers/*, where authentication middleware is absent, allowing requests to reach critical management functionality without credentials. A remote attacker can directly invoke these endpoints to enumerate existing provider connections and to create, modify, or delete them. Because provider connection objects may contain sensitive integration data, successful exploitation can expose partial credentials, OAuth tokens, and API keys. By altering provider configuration, an attacker can also redirect AI service traffic to attacker-controlled infrastructure, and by deleting provider connections can render the application unable to use configured providers.
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No public exploit code observed for this vulnerability.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated access vulnerability in 9Router that allows remote attackers to manipulate provider connections.
An unauthenticated access vulnerability in 9Router through version 0.4.41 caused by missing authentication middleware on provider management API routes, allowing remote attackers to access and manipulate provider connections, expose credentials and tokens, redirect AI traffic, or cause denial of service.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.