{"id":"CVE-2026-123309","aliases":["EUVD-2026-118073","GHSA-4rqw-p72p-2m5j"],"status":"published","title":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web...","description":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web server via Markdown preview","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0023,"percentile":0.13923,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-11-06T10:28:01Z","modified":"2026-11-12T02:46:57Z","products":[{"vendor":"jetbrains","product":"intellij idea"},{"vendor":"jetbrains","product":"intellij_idea"}],"references":[{"url":"https://www.jetbrains.com/privacy-security/issues-fixed/","tags":["Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123309","tags":["advisory"]},{"url":"https://www.jetbrains.com/privacy-security/issues-fixed"},{"url":"https://github.com/advisories/GHSA-4rqw-p72p-2m5j"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123309.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-123309","description":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web server via Markdown preview","status":"published","published":"2026-11-06T10:28:01.193Z","modified":"2026-11-06T14:40:18.394Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-06T15:28:32.799664Z"}],"euvd":[{"id":"EUVD-2026-118073","description":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web server via Markdown preview","status":"published","published":"2026-11-06T10:28:01Z","modified":"2026-11-06T14:40:18Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-06T16:05:20.816071Z"}],"ghsa":[{"id":"GHSA-4rqw-p72p-2m5j","title":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web...","description":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web server via Markdown preview","status":"published","published":"2026-11-06T12:30:40Z","modified":"2026-11-06T12:30:44Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-06T13:00:05.657094Z"}],"nvd":[{"id":"CVE-2026-123309","description":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web server via Markdown preview","status":"published","published":"2026-11-06T11:17:10.053Z","modified":"2026-11-10T20:09:13.177Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-10T22:21:31.83577Z"}],"osv":[{"id":"CVE-2026-123309","description":"In JetBrains IntelliJ IDEA before 2026.3, \n2026.2.4 stored XSS was possible on the built-in web server via Markdown preview","status":"published","published":"2026-11-06T10:28:01.193Z","modified":"2026-11-12T02:46:57.310560328Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-12T02:58:48.611889Z"}]}}