{"schemaVersion":3,"id":"CVE-2026-54759","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove <iframe> elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious <iframe> in a Bazaar package README that executes arbitrary commands on the victim's machine when the package details are viewed. No package installation is required. This vulnerability is fixed in 3.7.0.","dates":{"published":"2026-06-24T21:21:57.842Z","modified":"2026-06-25T12:32:38.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.7,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.7,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.7,"severity":"high","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00444,"percentile":0.37212,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00444},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00444,"percentile":0.37212}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00444,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00444,"percentile":0.37212}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"}],"affected":[{"vendor":"siyuan-note","product":"siyuan","name":"siyuan","label":"siyuan","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.7.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.7.0","eol":null,"hubHref":"/vendor/siyuan-note/siyuan"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-r6v5-4c66-f6pw","label":"github.com/siyuan-note/siyuan/security/advisories/GHSA-r6v5-4c66-f6pw","hostname":"github.com","tags":["X Refsource CONFIRM"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-06-24T21:21:57.842Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-25T12:32:38.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T04:07:39.669Z","stale":false,"partial":false}}