{"id":"CVE-2026-54759","aliases":["EUVD-2026-39101","GHSA-r6v5-4c66-f6pw"],"status":"published","title":"SiYuan: Lute HTML sanitizer allows `\u003ciframe\u003e` tags in Bazaar package README, leading to arbitrary command execution via SiYuan Electron client","description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove \u003ciframe\u003e elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious \u003ciframe\u003e 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.","severity":{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00326,"percentile":0.25908,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-06-24T21:21:57Z","modified":"2026-10-28T02:30:47Z","products":[{"vendor":"siyuan-note","product":"siyuan"}],"references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-r6v5-4c66-f6pw","tags":["x_refsource_CONFIRM","exploit","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54759.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54759","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-54759","title":"SiYuan: Lute HTML sanitizer allows `\u003ciframe\u003e` tags in Bazaar package README, leading to arbitrary command execution via SiYuan Electron client","description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove \u003ciframe\u003e elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious \u003ciframe\u003e 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.","status":"published","published":"2026-06-24T21:21:57.842Z","modified":"2026-06-25T12:32:38Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:38:09.774038Z"}],"euvd":[{"id":"EUVD-2026-39101","description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove \u003ciframe\u003e elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious \u003ciframe\u003e 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.","status":"published","published":"2026-06-24T21:21:57Z","modified":"2026-06-25T12:32:38Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high"}],"updated_at":"2026-11-02T18:20:29.723653Z"}],"nvd":[{"id":"CVE-2026-54759","description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove \u003ciframe\u003e elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious \u003ciframe\u003e 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.","status":"published","published":"2026-06-24T22:16:48.873Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:25.67873Z"}],"osv":[{"id":"CVE-2026-54759","title":"SiYuan: Lute HTML sanitizer allows `\u003ciframe\u003e` tags in Bazaar package README, leading to arbitrary command execution via SiYuan Electron client","description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, Lute's HTML sanitizer does not remove \u003ciframe\u003e elements. Combined with the SiYuan Electron client's permissive security configuration, an attacker can include a malicious \u003ciframe\u003e 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.","status":"published","published":"2026-06-24T21:21:57.842Z","modified":"2026-10-28T02:30:47.46773081Z","cvss":[{"version":"4.0","score":8.7,"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","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:10.818486Z"}]}}