{"id":"CVE-2016-1209","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-1209","generatedAt":"2026-11-05T05:27:51.783Z","title":"The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks via crafted serialized values in a POST request.","description":"The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks via crafted serialized values in a POST request.","published":"2016-05-14T15:59:03.000Z","lastModified":"2026-06-17T00:41:29.000Z","status":"Modified","sourceIdentifier":"vultures@jpcert.or.jp","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-20"],"affected":["ninjaforms/ninja forms"],"epss":{"score":0.61612,"percentile":0.99172,"date":"2026-11-04","history":[{"date":"2026-09-21","score":0.56411,"percentile":0.99038},{"date":"2026-09-22","score":0.61612,"percentile":0.9913}]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2016-05-04","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":41692,"kind":"exploit","title":"WordPress Plugin Ninja Forms 2.9.36 < 2.9.42 - File Upload (Metasploit)","url":"https://www.exploit-db.com/exploits/41692","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/41692.rb","file":"exploits/multiple/webapps/41692.rb","published":"2016-05-04","added":"2017-03-23","updated":"2017-03-23","author":"Metasploit","type":"webapps","platform":"multiple","port":null,"verified":true,"codes":["CVE-2016-1209","OSVDB-8485"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/rapid7/metasploit-framework/blob/8cd9a9b6708c4a175d5175879169188dc8014a51/modules/exploits/multi/http/wp_ninja_forms_unauthenticated_file_upload.rb"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 61.6%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[{"kind":"epss","label":"EPSS jump","at":"2026-09-22T00:00:00.000Z","detail":{"to":0.61612,"from":0.56411,"percentile":0.9913},"summary":"EPSS moved from 56.4% to 61.6% probability of exploitation in the next thirty days."}],"references":[{"url":"http://jvn.jp/en/jp/JVN44657371/index.html","tags":["Vendor Advisory"],"source":"vultures@jpcert.or.jp"},{"url":"http://jvndb.jvn.jp/jvndb/JVNDB-2016-000064","tags":["Vendor Advisory"],"source":"vultures@jpcert.or.jp"},{"url":"http://packetstormsecurity.com/files/137211/WordPress-Ninja-Forms-Unauthenticated-File-Upload.html","tags":["Exploit"],"source":"vultures@jpcert.or.jp"},{"url":"http://www.pritect.net/blog/ninja-forms-2-9-42-critical-security-vulnerabilities","source":"vultures@jpcert.or.jp"},{"url":"http://www.rapid7.com/db/modules/exploit/unix/webapp/wp_ninja_forms_unauthenticated_file_upload","tags":["Exploit"],"source":"vultures@jpcert.or.jp"},{"url":"https://ninjaforms.com/important-security-update-always-hurt-ones-love/","source":"vultures@jpcert.or.jp"},{"url":"https://wordpress.org/plugins/ninja-forms/changelog/","source":"vultures@jpcert.or.jp"},{"url":"https://wpvulndb.com/vulnerabilities/8485","source":"vultures@jpcert.or.jp"},{"url":"http://jvn.jp/en/jp/JVN44657371/index.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://jvndb.jvn.jp/jvndb/JVNDB-2016-000064","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/137211/WordPress-Ninja-Forms-Unauthenticated-File-Upload.html","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.pritect.net/blog/ninja-forms-2-9-42-critical-security-vulnerabilities","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.rapid7.com/db/modules/exploit/unix/webapp/wp_ninja_forms_unauthenticated_file_upload","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ninjaforms.com/important-security-update-always-hurt-ones-love/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://wordpress.org/plugins/ninja-forms/changelog/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://wpvulndb.com/vulnerabilities/8485","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-1209","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}