{"id":"CVE-2026-41871","aliases":["EUVD-2026-74803","GHSA-5w4f-vwv7-mj4c"],"status":"published","title":"Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)","description":"Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server  (Nutch REST API).\n\n\n\nThis issue affects Apache Nutch: from 1.10 through 1.22.\n\n\n\nUsers are recommended to upgrade to version 1.23, which removes the Nutch Server.\nIf an upgrade is not possible, user must restrict access to instances running the Nutch Service to trusted users only.\nPlease, also visit the  Apache Nutch security advisories https://nutch.apache.org/documentation/security/ .","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00745,"percentile":0.5507,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-470","CWE-862"],"published":"2026-09-09T10:45:47Z","modified":"2026-09-10T20:38:51Z","products":[{"vendor":"apache","product":"nutch"},{"vendor":"apache software foundation","product":"apache nutch"}],"references":[{"url":"https://lists.apache.org/thread/rbr63fx8vlrhzrfknq2l0mg0d0blsl54","tags":["vendor-advisory","Mailing List","Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/08/5","tags":["Mailing List","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41871"},{"url":"https://github.com/advisories/GHSA-5w4f-vwv7-mj4c"}],"sources":{"cve":[{"id":"CVE-2026-41871","title":"Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)","description":"Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server  (Nutch REST API).\n\n\n\nThis issue affects Apache Nutch: from 1.10 through 1.22.\n\n\n\nUsers are recommended to upgrade to version 1.23, which removes the Nutch Server.\nIf an upgrade is not possible, user must restrict access to instances running the Nutch Service to trusted users only.\nPlease, also visit the  Apache Nutch security advisories https://nutch.apache.org/documentation/security/ .","status":"published","published":"2026-09-09T10:45:47.005Z","modified":"2026-09-10T17:56:50.962Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-862","CWE-470"],"updated_at":"2026-11-02T13:41:08.498858Z"}],"euvd":[{"id":"EUVD-2026-74803","description":"Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server  (Nutch REST API).\n\n\n\nThis issue affects Apache Nutch: from 1.10 through 1.22.\n\n\n\nUsers are recommended to upgrade to version 1.23, which removes the Nutch Server.\nIf an upgrade is not possible, user must restrict access to instances running the Nutch Service to trusted users only.\nPlease, also visit the  Apache Nutch security advisories https://nutch.apache.org/documentation/security/ .","status":"published","published":"2026-09-09T10:45:47Z","modified":"2026-09-10T17:56:50Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T17:28:23.831795Z"}],"ghsa":[{"id":"GHSA-5w4f-vwv7-mj4c","title":"Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe...","description":"Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server  (Nutch REST API).\n\n\n\nThis issue affects Apache Nutch: from 1.10 through 1.22.\n\n\n\nUsers are recommended to upgrade to version 1.23, which removes the Nutch Server.\nIf an upgrade is not possible, user must restrict access to instances running the Nutch Service to trusted users only.\nPlease, also visit the  Apache Nutch security advisories https://nutch.apache.org/documentation/security/ .","status":"published","published":"2026-09-09T12:32:13Z","modified":"2026-09-10T18:32:55Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-470"],"updated_at":"2026-11-02T15:11:42.667371Z"}],"nvd":[{"id":"CVE-2026-41871","description":"Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server  (Nutch REST API).\n\n\n\nThis issue affects Apache Nutch: from 1.10 through 1.22.\n\n\n\nUsers are recommended to upgrade to version 1.23, which removes the Nutch Server.\nIf an upgrade is not possible, user must restrict access to instances running the Nutch Service to trusted users only.\nPlease, also visit the  Apache Nutch security advisories https://nutch.apache.org/documentation/security/ .","status":"published","published":"2026-09-09T11:17:14.57Z","modified":"2026-09-10T20:38:51.25Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-470","CWE-862"],"updated_at":"2026-11-02T14:12:45.93749Z"}]}}