{"id":"CVE-2021-21666","aliases":["EUVD-2021-1292","GHSA-8h77-3xwr-hqhh"],"status":"published","title":"Cross-site scripting in Jenkins Kiuwan Plugin","description":"Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) 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":"2026-11-11","score":0.01216,"percentile":0.68972,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-06-10T14:25:22Z","modified":"2026-06-17T03:35:57Z","fixes":[{"ecosystem":"Maven","package":"org.jenkins-ci.plugins:kiuwanJenkinsPlugin","fixed_in":["1.6.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.plugins:kiuwanJenkinsPlugin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.plugins:kiuwanJenkinsPlugin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1"}]}],"versions":["1.0","1.1","1.2","1.3.2","1.3.3","1.3.4","1.3.5","1.4.0","1.4.1","1.4.2","1.4.3","1.4.4","1.4.6","1.5.0","1.5.1","1.5.2","1.6.0"]}],"products":[{"vendor":"jenkins","product":"kiuwan"},{"vendor":"jenkins project","product":"jenkins kiuwan plugin"}],"references":[{"url":"https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2367","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2021/06/10/14","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21666","tags":["advisory"]},{"url":"https://github.com/jenkinsci/kiuwan-plugin/commit/a5f6fdb1b8ad09d170547a4cc2b90c4829ef1f0a","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8h77-3xwr-hqhh"},{"url":"https://github.com/jenkinsci/kiuwan-plugin","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-21666","description":"Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.","status":"published","published":"2021-06-10T14:25:22Z","modified":"2024-08-03T18:23:27.488Z","updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-1292","description":"Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.","status":"published","published":"2021-06-10T14:25:22Z","modified":"2024-08-03T18:23:27Z","updated_at":"2026-11-03T03:25:05.745586Z"}],"ghsa":[{"id":"GHSA-8h77-3xwr-hqhh","title":"Cross-site scripting in Jenkins Kiuwan Plugin","description":"Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.\n\nOnly older releases of Jenkins are affected by this vulnerability. Jenkins 2.275 and newer, LTS 2.263.2 and newer include a protection preventing this from being exploitable.\n\nJenkins Kiuwan Plugin 1.6.1 escapes affected parts of the error message in the form validation endpoint.","status":"published","published":"2021-06-16T17:10:50Z","modified":"2023-12-26T11:58:38Z","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":"2026-11-02T14:37:28.04129Z"}],"nvd":[{"id":"CVE-2021-21666","description":"Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.","status":"published","published":"2021-06-10T15:15:09.057Z","modified":"2026-06-17T03:35:57.663Z","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":"2026-11-02T14:06:54.439974Z"}],"osv":[{"id":"GHSA-8h77-3xwr-hqhh","title":"Cross-site scripting in Jenkins Kiuwan Plugin","description":"Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.\n\nOnly older releases of Jenkins are affected by this vulnerability. Jenkins 2.275 and newer, LTS 2.263.2 and newer include a protection preventing this from being exploitable.\n\nJenkins Kiuwan Plugin 1.6.1 escapes affected parts of the error message in the form validation endpoint.","status":"published","published":"2021-06-16T17:10:50Z","modified":"2024-02-16T08:04:55.161375Z","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":"2026-11-02T15:46:42.437513Z"}]}}