{"id":"CVE-2018-13879","aliases":["EUVD-2018-5813","GHSA-jf3p-59jq-4gpv"],"status":"published","title":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When...","description":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.","severity":{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00618,"percentile":0.49858,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2018-07-11T01:00:00Z","modified":"2026-10-20T10:50:18Z","products":[{"vendor":"rocket.chat","product":"rocket.chat"}],"references":[{"url":"https://github.com/RocketChat/Rocket.Chat/issues/10795","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-13879"},{"url":"https://github.com/advisories/GHSA-jf3p-59jq-4gpv"}],"sources":{"cve":[{"id":"CVE-2018-13879","description":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.","status":"published","published":"2018-07-11T01:00:00Z","modified":"2024-09-17T03:33:02.261Z","updated_at":"2026-11-02T14:35:07.01498Z"}],"euvd":[{"id":"EUVD-2018-5813","description":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.","status":"published","published":"2018-07-11T01:00:00Z","modified":"2024-09-17T03:33:02Z","updated_at":"2026-11-03T00:28:30.770637Z"}],"ghsa":[{"id":"GHSA-jf3p-59jq-4gpv","title":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When...","description":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.","status":"published","published":"2022-05-14T03:01:00Z","modified":"2023-02-02T05:07:04Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:52:25.351057Z"}],"nvd":[{"id":"CVE-2018-13879","description":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.","status":"published","published":"2018-07-11T01:29:01.55Z","modified":"2026-06-17T01:40:19.033Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:04:32.929986Z"}],"osv":[{"id":"CVE-2018-13879","description":"A reflected XSS issue was discovered in the registration form in Rocket.Chat before 0.66. When one creates an account, the next step will ask for a username. This field will not save HTML control characters but an error will be displayed that shows the attempted username unescaped via packages/rocketchat-ui-login/client/username/username.js in packages/rocketchat-ui-login/client/username/username.html.","status":"published","published":"2018-07-11T01:29:01.55Z","modified":"2026-10-20T10:50:18.910910432Z","cvss":[{"version":"3.0","score":5.4,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:08.242347Z"}]}}