{"id":"CVE-2026-86543","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-86543","summary":"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…","details":"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.","published":"2026-09-07T23:16:54.160","modified":"2026-09-07T23:16:54.160","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/knowns-dev/knowns/commit/878a02cb7cc14f0a592fdfda7a520af3cac500fb","label":"knowns-dev/knowns@878a02c"},"references":[{"type":"WEB","url":"https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/cli/browser.go#L193-L200"},{"type":"WEB","url":"https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/auth.go#L80-L86"},{"type":"WEB","url":"https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/tunnel.go#L26-L38"},{"type":"WEB","url":"https://github.com/knowns-dev/knowns/commit/878a02cb7cc14f0a592fdfda7a520af3cac500fb"},{"type":"WEB","url":"https://github.com/knowns-dev/knowns/releases/tag/v0.30.0"},{"type":"WEB","url":"https://github.com/knowns-dev/knowns/security/advisories/GHSA-fc85-99vc-9c75"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/knowns-before-0.30.0-unauthenticated-management-api-exposure"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-07T23:16:54.160"}}