{"id":"CVE-2017-12623","aliases":["EUVD-2022-4986","GHSA-qj7f-j6h9-g5rq"],"status":"published","title":"XML External Entity Reference in Apache NiFi","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","severity":{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0194,"percentile":0.80258,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-611"],"published":"2017-10-10T18:00:00Z","modified":"2026-10-24T10:30:57Z","fixes":[{"ecosystem":"Maven","package":"org.apache.nifi:nifi","fixed_in":["1.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.nifi:nifi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.4.0"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.apache.nifi:nifi","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.4.0"}]}],"versions":["1.0.0","1.0.1","1.1.0","1.1.1","1.1.2","1.2.0","1.3.0"]}],"products":[{"vendor":"apache","product":"nifi"},{"vendor":"apache software foundation","product":"apache nifi"}],"references":[{"url":"https://nifi.apache.org/security.html#CVE-2017-12623","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-12623","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qj7f-j6h9-g5rq"}],"sources":{"cve":[{"id":"CVE-2017-12623","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","status":"published","published":"2017-10-10T18:00:00Z","modified":"2024-09-16T16:17:35.807Z","updated_at":"2026-11-02T14:33:17.59533Z"}],"euvd":[{"id":"EUVD-2022-4986","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","status":"published","published":"2017-10-10T18:00:00Z","modified":"2024-09-16T16:17:35Z","updated_at":"2026-11-03T00:55:53.554412Z"}],"ghsa":[{"id":"GHSA-qj7f-j6h9-g5rq","title":"XML External Entity Reference in Apache NiFi","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","status":"published","published":"2022-05-17T00:26:27Z","modified":"2023-01-30T05:01:08Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:36:27.500048Z"}],"nvd":[{"id":"CVE-2017-12623","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","status":"published","published":"2017-10-10T18:29:00.197Z","modified":"2026-06-17T01:03:39.14Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T14:04:01.734197Z"}],"osv":[{"id":"CVE-2017-12623","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","status":"published","published":"2017-10-10T18:29:00.197Z","modified":"2026-10-24T10:30:57.617377056Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:04.159616Z"},{"id":"GHSA-qj7f-j6h9-g5rq","title":"XML External Entity Reference in Apache NiFi","description":"An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","status":"published","published":"2022-05-17T00:26:27Z","modified":"2023-11-08T03:58:53.48768Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-611"],"updated_at":"2026-11-02T15:46:54.760124Z"}]}}