{"id":"CVE-2021-27821","aliases":["EUVD-2021-14560","GHSA-4r8j-5v22-gg78"],"status":"published","title":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross...","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","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":"2026-11-12","score":0.00591,"percentile":0.48766,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-05-25T13:41:33Z","modified":"2026-07-09T01:16:49Z","products":[{"vendor":"openwrt","product":"luci"}],"references":[{"url":"https://openwrt.org/advisory/start"},{"url":"https://openwrt.org/releases/19.07/start"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27821"},{"url":"http://openwrt.com"},{"url":"http://openwrtorg.com"},{"url":"https://github.com/advisories/GHSA-4r8j-5v22-gg78"}],"sources":{"cve":[{"id":"CVE-2021-27821","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","status":"published","published":"2021-05-25T13:41:33Z","modified":"2026-07-09T00:12:50.316Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14560","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","status":"published","published":"2021-05-25T13:41:33Z","modified":"2026-07-09T00:12:50Z","updated_at":"2026-11-02T18:20:09.112703Z"}],"ghsa":[{"id":"GHSA-4r8j-5v22-gg78","title":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross...","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability which can lead to attackers carrying out arbitrary code execution.","status":"published","published":"2022-05-24T19:03:13Z","modified":"2026-07-05T18:31:29Z","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":"2026-11-02T15:09:17.527527Z"}],"nvd":[{"id":"CVE-2021-27821","description":"The Web Interface for OpenWRT LuCI version 19.07 and lower has been discovered to have a cross-site scripting vulnerability.","status":"published","published":"2021-05-25T14:15:07.51Z","modified":"2026-07-09T01:16:49.22Z","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":"2026-11-02T14:06:53.987491Z"}]}}