CRITICAL 9.3 NVD
CVE-2026-86543
knowns versions before 0.30.0 serve the management API without authentication on all network interfaces by default, with no password required on fresh installat
knowns versions before 0.30.0 serve the management API without authentication on all network interfaces by default, with no password required on fresh installations. Attackers can access the unauthenticated /api/tunnel/start endpoint to provision a public tunnel and republish the API at a publicly accessible address.
References
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/cli/browser.go#L193-L200
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/auth.go#L80-L86
- https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/tunnel.go#L26-L38
- https://github.com/knowns-dev/knowns/commit/878a02cb7cc14f0a592fdfda7a520af3cac500fb
- https://github.com/knowns-dev/knowns/releases/tag/v0.30.0
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-09-07 via NVD.
Risk Timeline
CVE Disclosed2026-09-07 · 3 days ago
Remediation Resources
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