{"id":"CVE-2026-16267","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-16267","summary":"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…","details":"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.","published":"2026-08-08T07:17:09.667","modified":"2026-08-11T20:17:27.263","cvss":{"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"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T20:17:27.263"}}