{"id":"CVE-2020-8127","aliases":["EUVD-2021-0976","GHSA-6vwx-mwp8-fh44"],"status":"published","title":"Cross-site Scripting in reveal.js","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","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":"2026-11-10","score":0.01197,"percentile":0.68362,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2020-02-28T19:25:46Z","modified":"2026-10-24T10:30:24Z","fixes":[{"ecosystem":"npm","package":"reveal.js","fixed_in":["3.9.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"reveal.js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.9.1"},{"fixed":"3.9.2"}]}]},{"source":"osv","ecosystem":"npm","package":"reveal.js","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.9.2"}]}]}],"products":[{"vendor":"revealjs","product":"reveal.js"}],"references":[{"url":"https://hackerone.com/reports/691977","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8127","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6vwx-mwp8-fh44"}],"sources":{"cve":[{"id":"CVE-2020-8127","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","status":"published","published":"2020-02-28T19:25:46Z","modified":"2024-08-04T09:48:25.585Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2021-0976","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","status":"published","published":"2020-02-28T19:25:46Z","modified":"2024-08-04T09:48:25Z","updated_at":"2026-11-03T03:07:58.055641Z"}],"ghsa":[{"id":"GHSA-6vwx-mwp8-fh44","title":"Cross-site Scripting in reveal.js","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","status":"published","published":"2021-05-10T18:47:10Z","modified":"2023-02-01T05:05:26Z","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":"2026-11-02T14:36:34.260786Z"}],"nvd":[{"id":"CVE-2020-8127","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","status":"published","published":"2020-02-28T20:15:11.537Z","modified":"2026-06-17T03:25:54.477Z","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":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"CVE-2020-8127","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","status":"published","published":"2020-02-28T20:15:11.537Z","modified":"2026-10-24T10:30:24.928239097Z","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":"2026-11-02T15:44:17.663289Z"},{"id":"GHSA-6vwx-mwp8-fh44","title":"Cross-site Scripting in reveal.js","description":"Insufficient validation in cross-origin communication (postMessage) in reveal.js version 3.9.1 and earlier allow attackers to perform cross-site scripting attacks.","status":"published","published":"2021-05-10T18:47:10Z","modified":"2023-11-08T04:04:13.651442Z","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":"2026-11-02T15:46:40.308826Z"}]}}