{"id":"CVE-2021-21657","aliases":["EUVD-2022-3603","GHSA-cphv-7cxw-5hcc"],"status":"published","title":"XXE vulnerability in Jenkins Filesystem Trigger Plugin","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01596,"percentile":0.76058,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2021-05-25T14:10:14Z","modified":"2026-10-24T10:30:22Z","fixes":[{"ecosystem":"Maven","package":"org.jenkins-ci.plugins:fstrigger","fixed_in":["0.41"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.plugins:fstrigger","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.40"},{"fixed":"0.41"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.plugins:fstrigger","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.41"}]}],"versions":["0.1","0.10","0.10.1","0.11","0.12","0.13","0.14","0.15","0.16","0.17","0.18","0.19","0.2","0.20","0.21","0.22","0.23","0.24","0.25","0.26","0.27","0.28","0.29","0.3","0.30","0.31","0.32","0.33","0.34","0.35","0.36","0.37","0.38","0.39","0.4","0.40","0.5","0.6","0.7","0.8","0.9"]}],"products":[{"vendor":"jenkins","product":"filesystem_trigger"},{"vendor":"jenkins project","product":"jenkins filesystem trigger plugin"}],"references":[{"url":"https://www.jenkins.io/security/advisory/2021-05-25/#SECURITY-2339","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2021/05/25/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21657","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cphv-7cxw-5hcc"},{"url":"https://github.com/jenkinsci/fstrigger-plugin","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-21657","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.","status":"published","published":"2021-05-25T14:10:14Z","modified":"2024-08-03T18:23:27.525Z","updated_at":"2026-11-02T14:32:59.802172Z"}],"euvd":[{"id":"EUVD-2022-3603","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.","status":"published","published":"2021-05-25T14:10:14Z","modified":"2024-08-03T18:23:27Z","updated_at":"2026-11-03T03:25:05.131984Z"}],"ghsa":[{"id":"GHSA-cphv-7cxw-5hcc","title":"XXE vulnerability in Jenkins Filesystem Trigger Plugin","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.\n\nThis allows attackers with Job/Configure permission or otherwise able to control the contents of an XML file being polled for changes to have Jenkins parse a crafted XML document that uses external entities for extraction of secrets from the polling Jenkins controller or agent, server-side request forgery, or denial-of-service attacks.\n\nJenkins Filesystem Trigger Plugin 0.41 disables external entity resolution for its XML parser.","status":"published","published":"2022-05-24T19:03:11Z","modified":"2023-10-27T14:57:01Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:37:10.633403Z"}],"nvd":[{"id":"CVE-2021-21657","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.","status":"published","published":"2021-05-25T17:15:08.037Z","modified":"2026-06-17T03:35:56.783Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:53.987491Z"}],"osv":[{"id":"CVE-2021-21657","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.","status":"published","published":"2021-05-25T17:15:08.037Z","modified":"2026-10-24T10:30:22.810312812Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.367807Z"},{"id":"GHSA-cphv-7cxw-5hcc","title":"XXE vulnerability in Jenkins Filesystem Trigger Plugin","description":"Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.\n\nThis allows attackers with Job/Configure permission or otherwise able to control the contents of an XML file being polled for changes to have Jenkins parse a crafted XML document that uses external entities for extraction of secrets from the polling Jenkins controller or agent, server-side request forgery, or denial-of-service attacks.\n\nJenkins Filesystem Trigger Plugin 0.41 disables external entity resolution for its XML parser.","status":"published","published":"2022-05-24T19:03:11Z","modified":"2024-02-16T08:06:28.696737Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:45.28161Z"}]}}