{"api_version":"1","generated_at":"2026-08-14T10:36:07+00:00","cve":"CVE-2026-16267","urls":{"html":"https://cve.report/CVE-2026-16267","api":"https://cve.report/api/cve/CVE-2026-16267.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-16267","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-16267"},"summary":{"title":"Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field","description":"The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attackers to inject arbitrary PHP objects.","state":"PUBLISHED","assigner":"WPScan","published_at":"2026-08-08 07:17:09","updated_at":"2026-08-08 07:17:09"},"problem_types":["CWE-502 Deserialization of Untrusted Data","CWE-502 CWE-502 Deserialization of Untrusted Data"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/","name":"https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/","refsource":"contact@wpscan.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-16267","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16267","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Unknown","product":"Newsletters","version":"affected 4.16 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Sai Praneeth Koti","lang":"en"},{"source":"CNA","value":"WPScan","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"16267","cve":"CVE-2026-16267","epss":"0.002670000","percentile":"0.187920000","score_date":"2026-08-12","updated_at":"2026-08-13 00:04:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-16267","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-08-11T19:32:25.720957Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-11T19:32:29.821Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Newsletters","vendor":"Unknown","versions":[{"lessThan":"4.16","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Sai Praneeth Koti"},{"lang":"en","type":"coordinator","value":"WPScan"}],"descriptions":[{"lang":"en","value":"The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attackers to inject arbitrary PHP objects."}],"problemTypes":[{"descriptions":[{"description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-08T06:00:10.538Z","orgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","shortName":"WPScan"},"references":[{"tags":["exploit","vdb-entry","technical-description"],"url":"https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/"}],"source":{"discovery":"EXTERNAL"},"title":"Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field","x_generator":{"engine":"WPScan CVE Generator"}}},"cveMetadata":{"assignerOrgId":"1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81","assignerShortName":"WPScan","cveId":"CVE-2026-16267","datePublished":"2026-08-08T06:00:10.538Z","dateReserved":"2026-07-20T09:09:37.520Z","dateUpdated":"2026-08-11T19:32:29.821Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-08 07:17:09","lastModifiedDate":"2026-08-08 07:17:09","problem_types":["CWE-502 Deserialization of Untrusted Data","CWE-502 CWE-502 Deserialization of Untrusted Data"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"16267","Ordinal":"1","Title":"Newsletters < 4.16 - Unauthenticated PHP Object Injection via Da","CVE":"CVE-2026-16267","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"16267","Ordinal":"1","NoteData":"The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attackers to inject arbitrary PHP objects.","Type":"Description","Title":"Newsletters < 4.16 - Unauthenticated PHP Object Injection via Da"}]}}}