{"id":"CVE-2018-20859","aliases":["EUVD-2018-13397","GHSA-mrv2-vg67-g8pw"],"status":"published","title":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","description":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01202,"percentile":0.68427,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2019-07-30T18:46:20Z","modified":"2026-10-20T10:48:03Z","products":[{"vendor":"edx","product":"edx-platform"}],"references":[{"url":"https://groups.google.com/forum/#%21topic/openedx-announce/wsm5mtUhhME","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://github.com/edx/edx-platform/commit/5b144559fbdba7ff673cc1c165aa2d343e07b6bd.patch","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://patch-diff.githubusercontent.com/raw/edx/edx-platform/pull/18639.patch","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20859"},{"url":"https://groups.google.com/forum/#!topic/openedx-announce/wsm5mtUhhME"},{"url":"https://github.com/advisories/GHSA-mrv2-vg67-g8pw"}],"sources":{"cve":[{"id":"CVE-2018-20859","description":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","status":"published","published":"2019-07-30T18:46:20Z","modified":"2024-08-05T12:12:28.589Z","updated_at":"2026-11-02T14:34:59.872731Z"}],"euvd":[{"id":"EUVD-2018-13397","description":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","status":"published","published":"2019-07-30T18:46:20Z","modified":"2024-08-05T12:12:28Z","updated_at":"2026-11-03T02:39:29.769885Z"}],"ghsa":[{"id":"GHSA-mrv2-vg67-g8pw","title":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","description":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","status":"published","published":"2022-05-24T16:51:41Z","modified":"2024-04-04T01:25:15Z","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":"2026-11-02T14:55:58.413912Z"}],"nvd":[{"id":"CVE-2018-20859","description":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","status":"published","published":"2019-07-30T19:15:12.967Z","modified":"2026-06-17T01:53:36.9Z","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":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:04:59.278647Z"}],"osv":[{"id":"CVE-2018-20859","description":"edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.","status":"published","published":"2019-07-30T19:15:12.967Z","modified":"2026-10-20T10:48:03.752651334Z","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":"2026-11-02T15:44:09.145458Z"}]}}