{"id":"CVE-2021-34817","aliases":["EUVD-2021-21464","GHSA-543c-wff7-pg59"],"status":"published","title":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote...","description":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.","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":0.01343,"percentile":0.71601,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-07-19T13:38:11Z","modified":"2026-10-20T10:54:45Z","products":[{"vendor":"etherpad","product":"etherpad"}],"references":[{"url":"https://etherpad.org/#download","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://github.com/ether/etherpad-lite/releases/tag/1.8.14","tags":["x_refsource_MISC","x_transferred","Patch","Release Notes","Third Party Advisory","fix"]},{"url":"https://blog.sonarsource.com/etherpad-code-execution-vulnerabilities","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/ether/etherpad-lite/commit/a7968115581e20ef47a533e030f59f830486bdfa","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34817"},{"url":"https://github.com/advisories/GHSA-543c-wff7-pg59"}],"sources":{"cve":[{"id":"CVE-2021-34817","description":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.","status":"published","published":"2021-07-19T13:38:11Z","modified":"2024-08-04T00:26:53.996Z","updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-21464","description":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.","status":"published","published":"2021-07-19T13:38:11Z","modified":"2024-08-04T00:26:53Z","updated_at":"2026-11-03T03:24:31.977228Z"}],"ghsa":[{"id":"GHSA-543c-wff7-pg59","title":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote...","description":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.","status":"published","published":"2022-05-24T19:08:22Z","modified":"2023-01-30T05:00:53Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:17.249643Z"}],"nvd":[{"id":"CVE-2021-34817","description":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.","status":"published","published":"2021-07-19T14:15:08.15Z","modified":"2026-06-17T03:56:37.43Z","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":"2026-11-02T14:06:55.747384Z"}],"osv":[{"id":"CVE-2021-34817","description":"A Cross-Site Scripting (XSS) issue in the chat component of Etherpad 1.8.13 allows remote attackers to inject arbitrary JavaScript or HTML by importing a crafted pad.","status":"published","published":"2021-07-19T14:15:08.15Z","modified":"2026-10-20T10:54:45.637676825Z","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":"2026-11-02T15:44:20.13324Z"}]}}