{"id":"CVE-2026-110223","state":"PUBLISHED","title":"Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint","description":"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.","publishedAt":"2026-10-13T18:50:09.202Z","updatedAt":"2026-10-14T15:57:31.688Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Kareadita Kavita"],"affected":[{"vendor":"Kareadita","product":"Kavita","defaultStatus":"unaffected","versions":[{"version":"0.9.0","status":"affected","lessThanOrEqual":"0.9.1.4","versionType":"custom"}],"repo":"https://github.com/Kareadita/Kavita"}],"references":["https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/kavita-cbl-url-preflight-ssrf","https://github.com/Kareadita/Kavita/blob/879b8b73eb41d66f88dde8eb874cc99a3397eb11/Kavita.Server/Controllers/CBLController.cs#L82-L108","https://github.com/Kareadita/Kavita/blob/879b8b73eb41d66f88dde8eb874cc99a3397eb11/Kavita.Common/Helpers/FlurlConfiguration.cs#L46-L89","https://github.com/Kareadita/Kavita","https://www.vulncheck.com/advisories/kavita-0.9.0-through-0.9.1.4-ssrf-blocklist-bypass-via-upload-cbl-file-endpoint"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/110xxx/CVE-2026-110223.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110223","state":"PUBLISHED","datePublished":"2026-10-13T18:50:09.202Z","dateUpdated":"2026-10-14T15:57:31.688Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-13T17:59:41.760Z"},"containers":{"cna":{"title":"Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint","descriptions":[{"lang":"en","value":"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. 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