{"schema":"threatline.record/2","record":{"id":"CVE-2026-116748","aliases":[],"summary":"Transmission 4.0.0 before 4.1.3 Permissive CORS Leaks RPC Anti-CSRF Token","details":"Transmission 4.0.0 before 4.1.3 contains a permissive CORS vulnerability in handle_request() in rpc-server.cc that exposes the X-Transmission-Session-Id anti-CSRF token to any web origin. Malicious web pages can read the token from the 409 handshake response and replay it to issue RPC calls, enabling script-torrent-done execution, download-dir changes, or torrent and data deletion.","categories":["Unclassified"],"product":"transmission","vendor":"transmission","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116748","source_modified_at":"2026-10-26T21:52:45.799Z","fetched_at":"2026-10-26T23:45:56.352924Z","product":"transmission","vendor":"transmission","versions":[{"version":"4.0.0","status":"affected","versionType":"semver","lessThan":"4.1.3"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116748","source_modified_at":"2026-10-26T21:52:45.799Z","fetched_at":"2026-10-26T23:45:56.352924Z","package":{"name":"transmission","ecosystem":null},"version":"4.1.3","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-26T21:52:45.799Z","modified_at":"2026-10-26T21:52:45.799Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116748","fetched_at":"2026-10-26T23:45:56.352924Z","source_modified_at":"2026-10-26T21:52:45.799Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/transmission/transmission/pull/8938","tags":["issue-tracking","patch"]},{"source":"CVE List","url":"https://github.com/transmission/transmission/commit/c6a1bd2017a0fea9c956737c213f23e4b0f7929e","tags":["patch"]},{"source":"CVE List","url":"https://github.com/transmission/transmission","tags":["product"]},{"source":"CVE List","url":"https://github.com/transmission/transmission/releases/tag/4.1.3","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/transmission/transmission/blob/4.1.2/libtransmission/rpc-server.cc#L560","tags":["technical-description"]},{"source":"CVE List","url":"https://joshua.hu/transmission-cors-rpc-csrf-rce-drive-by-exploit","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/transmission-4.0.0-before-4.1.3-permissive-cors-leaks-rpc-anti-csrf-token","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-26T21:52:45.799Z","content_hash":"95a278c93e0cc08f882d1c9ed98bea6e09f099cafac487f489701891f9f975f9"}}