{"schemaVersion":3,"id":"CVE-2026-16297","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Clearfy Cache  WordPress plugin before 2.4.3 does not restrict the classes allowed when unserializing settings-import data, allowing users with administrator access to perform PHP Object Injection attacks, which may lead to remote code execution when a suitable gadget chain is present in the environment.","dates":{"published":"2026-08-03T06:00:13.754Z","modified":"2026-08-03T16:17:31.750Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.6,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"wordfence","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.1,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":6.6,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00367,"percentile":0.29016,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0.144,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.00223},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00367,"percentile":0.29016}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00223,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00367,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00367,"percentile":0.29016}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_C5CEE3FDE5CEA2E3","name":"Exploit Reference (wpscan.com)","source":"reference","url":"https://wpscan.com/vulnerability/3daf62cd-eefe-49ec-89f7-b13f88111853/","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-502","name":"Deserialization of Untrusted Data","description":"The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/502.html"}],"affected":[{"vendor":"unknown","product":"clearfy cache","name":"Clearfy Cache","label":"clearfy cache","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.4.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4.3","eol":null,"hubHref":"/vendor/unknown/clearfy_cache"},{"vendor":"wordpress","product":"clearfy","name":"Clearfy Cache – WordPress optimization plugin, Minify HTML, CSS & JS, Defer","label":"clearfy","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.4.2 (fixed in 2.4.3)","noFixRecorded":false,"fixedIn":"2.4.3"}],"versionsText":"≤ 2.4.2 (fixed in 2.4.3)","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://wpscan.com/vulnerability/3daf62cd-eefe-49ec-89f7-b13f88111853/","label":"wpscan.com/vulnerability/3daf62cd-eefe-49ec-89f7-b13f88111853/","hostname":"wpscan.com","tags":["Exploit","VDB Entry","Technical Description"]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/73a5058c-74e2-419d-8034-d742cb8816ac","label":"www.wordfence.com/threat-intel/vulnerabilities/id/73a5058c-74e2-419d-8034-d742cb8816ac","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-08-03T06:00:13.754Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-08-03T16:17:31.750Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":36,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T09:03:48.871Z","stale":false,"partial":false}}