{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116748", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-26T20:23:37.457Z", "datePublished": "2026-10-26T21:52:45.799Z", "dateUpdated": "2026-10-26T21:52:45.799Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-26T21:52:45.799Z"}, "datePublic": "2026-06-25T00:00:00.000Z", "title": "Transmission 4.0.0 before 4.1.3 Permissive CORS Leaks RPC Anti-CSRF Token", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Permissive Cross-domain Security Policy with Untrusted Domains", "cweId": "CWE-942", "type": "CWE"}]}], "affected": [{"vendor": "transmission", "product": "transmission", "defaultStatus": "unaffected", "versions": [{"version": "4.0.0", "status": "affected", "versionType": "semver", "lessThan": "4.1.3"}], "packageURL": "pkg:github/transmission/transmission", "repo": "https://github.com/transmission/transmission"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:transmissionbt:transmission:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0.0", "versionEndExcluding": "4.1.3"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/transmission/transmission/pull/8938", "tags": ["issue-tracking", "patch"], "name": "Pull Request #8938"}, {"url": "https://github.com/transmission/transmission/commit/c6a1bd2017a0fea9c956737c213f23e4b0f7929e", "tags": ["patch"], "name": "Patch Commit"}, {"url": "https://github.com/transmission/transmission", "tags": ["product"]}, {"url": "https://github.com/transmission/transmission/releases/tag/4.1.3", "tags": ["release-notes"], "name": "transmission 4.1.3 Release Notes"}, {"url": "https://github.com/transmission/transmission/blob/4.1.2/libtransmission/rpc-server.cc#L560", "tags": ["technical-description"]}, {"url": "https://joshua.hu/transmission-cors-rpc-csrf-rce-drive-by-exploit", "tags": ["third-party-advisory"]}, {"name": "VulnCheck Advisory: Transmission 4.0.0 before 4.1.3 Permissive CORS Leaks RPC Anti-CSRF Token", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/transmission-4.0.0-before-4.1.3-permissive-cors-leaks-rpc-anti-csrf-token"}], "credits": [{"lang": "en", "value": "Joshua Rogers", "type": "finder"}, {"lang": "en", "value": "ckerr", "type": "remediation developer"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,4.1.3)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "transmission", "source": "cna", "vendor": "transmission"}, "product": "transmission", "vendor": "transmissionbt"}], "created": "2026-10-27T07:15:08.219257+00:00", "updated": "2026-10-27T08:45:14.316590+00:00", "vendors": ["transmissionbt", "transmissionbt$PRODUCT$transmission"]}