{"schema":"threatline.record/2","record":{"id":"CVE-2026-102354","aliases":["GHSA-wh78-rcw2-hhg9"],"summary":"BentoPDF: SSRF via DNS Rebinding (TOCTOU) in Cloudflare CORS Proxy Worker","details":"BentoPDF is a privacy-focused PDF toolkit that runs in the browser. In versions through 2.8.6, cloudflare/cors-proxy-worker.js performs a DNS-over-HTTPS safety check in hostnameResolvesToPrivate(), as used by isValidCertificateUrl() and isValidTsaUrl(), separately from the outbound fetch(targetUrl, ...). In deployments where PROXY_SECRET validation is not enabled, a direct client that controls authoritative DNS can forge the Origin header, supply a certificate, OCSP, CRL, or TSA URL that passes the proxy's accepted path checks, return a public address during validation, and return a private or link-local address during the later fetch. The endpoint can return allowed response bodies to the attacker, but exploitation requires precise timing, redirects and IP-literal obfuscation are blocked, and network reachability limits the target. This vulnerability is fixed in 2.8.7.","categories":["Unclassified"],"product":"bentopdf","vendor":"alam00000","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102354","source_modified_at":"2026-10-15T16:19:56.322Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"bentopdf","vendor":"alam00000","versions":[{"version":"< 2.8.7","status":"affected"}],"defaultStatus":null},{"source":"GitHub Advisory Database","source_url":"https://github.com/alam00000/bentopdf/security/advisories/GHSA-wh78-rcw2-hhg9","source_modified_at":"2026-09-28T22:59:06Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"ecosystem":"docker","name":"bentopdf and bentopdf-simple"},"range":"<= 2.8.6"}],"fixed_versions":[],"cvss":6.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09346,"score_date":"2026-10-23"},"published_at":"2026-10-14T19:00:13.518Z","modified_at":"2026-10-15T16:19:56.322Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102354","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T16:19:56.322Z"},{"source":"GitHub Advisory Database","url":"https://github.com/alam00000/bentopdf/security/advisories/GHSA-wh78-rcw2-hhg9","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-09-28T22:59:06Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102354","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/alam00000/bentopdf/security/advisories/GHSA-wh78-rcw2-hhg9","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/alam00000/bentopdf/commit/45496fcd2ed6e02dcdde0d3839cc5024c091760c","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/alam00000/bentopdf/commit/58cd1a8893bfe06e4a59a72adc2e7db00a8b9266","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/alam00000/bentopdf/releases/tag/v2.8.7","tags":["x_refsource_MISC"]}],"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":"2026-10-15T16:19:47.788376Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T16:19:56.322Z","content_hash":"766e25035e88efaa73074bf6b2ae7ebde6b213d76cdbaab6d5b13db01846c254"}}