{"id":"CVE-2024-40643","aliases":["EUVD-2024-38554","GHSA-g796-3g6g-jmmc"],"status":"published","title":"Joplin has a parsing error leading to Cross-site Scripting (XSS)","description":"Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that \"\u003c\" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an \"illegal\" tag within a tag.","severity":{"version":"3.1","score":9.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00793,"percentile":0.56608,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2024-09-09T14:28:20Z","modified":"2026-10-28T02:30:58Z","products":[{"vendor":"joplin_project","product":"joplin"},{"vendor":"joplinapp","product":"joplin"},{"vendor":"laurent22","product":"joplin"}],"references":[{"url":"https://github.com/laurent22/joplin/security/advisories/GHSA-g796-3g6g-jmmc","tags":["x_refsource_CONFIRM","Exploit","Vendor Advisory","advisory"]},{"url":"https://github.com/laurent22/joplin/commit/b220413a9b5ed55fb1f565ac786a5c231da8bc87","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40643.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40643","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-40643","title":"Joplin has a parsing error leading to Cross-site Scripting (XSS)","description":"Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that \"\u003c\" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an \"illegal\" tag within a tag.","status":"published","published":"2024-09-09T14:28:20.92Z","modified":"2024-09-09T14:52:47.111Z","cvss":[{"version":"3.1","score":9.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:34:07.152829Z"}],"euvd":[{"id":"EUVD-2024-38554","description":"Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that \"\u003c\" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an \"illegal\" tag within a tag.","status":"published","published":"2024-09-09T14:28:20Z","modified":"2024-09-09T14:52:47Z","cvss":[{"version":"3.1","score":9.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:56:00.719005Z"}],"nvd":[{"id":"CVE-2024-40643","description":"Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that \"\u003c\" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an \"illegal\" tag within a tag.","status":"published","published":"2024-09-09T15:15:11.597Z","modified":"2026-06-17T07:46:13.687Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:10:25.561537Z"}],"osv":[{"id":"CVE-2024-40643","title":"Joplin has a parsing error leading to Cross-site Scripting (XSS)","description":"Joplin is a free, open source note taking and to-do application. Joplin fails to take into account that \"\u003c\" followed by a non letter character will not be considered html. As such it is possible to do an XSS by putting an \"illegal\" tag within a tag.","status":"published","published":"2024-09-09T14:28:20.92Z","modified":"2026-10-28T02:30:58.565848615Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:41.618074Z"}]}}