{"schema":"threatline.record/2","record":{"id":"CVE-2026-110223","aliases":[],"summary":"Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint","details":"Kavita 0.9.0 through 0.9.1.4 contains a server-side request forgery vulnerability that allows authenticated users to bypass the SSRF blocklist through DNS rebinding or HTTPS redirects. Attackers can submit a URL to POST /api/Cbl/upload-cbl-file whose host rebinds or redirects to internal addresses after validation, enabling blind internal port and service probing.","categories":["Unclassified"],"product":"Kavita","vendor":"Kareadita","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110223","source_modified_at":"2026-10-14T15:57:31.688Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Kavita","vendor":"Kareadita","versions":[{"version":"0.9.0","lessThanOrEqual":"0.9.1.4","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":2.3,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.00279,"percentile":0.1926,"score_date":"2026-10-23"},"published_at":"2026-10-13T18:50:09.202Z","modified_at":"2026-10-14T15:57:31.688Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110223","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T15:57:31.688Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110223","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/kavita-cbl-url-preflight-ssrf","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://github.com/Kareadita/Kavita/blob/879b8b73eb41d66f88dde8eb874cc99a3397eb11/Kavita.Server/Controllers/CBLController.cs#L82-L108","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/Kareadita/Kavita/blob/879b8b73eb41d66f88dde8eb874cc99a3397eb11/Kavita.Common/Helpers/FlurlConfiguration.cs#L46-L89","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/Kareadita/Kavita","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/kavita-0.9.0-through-0.9.1.4-ssrf-blocklist-bypass-via-upload-cbl-file-endpoint","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T14:49:52.182103Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T15:57:31.688Z","content_hash":"3bc31464e1b9f9e40513d85f06a4d8afbbfb5e3c504ef76498d1868adfe5fa0b"}}