{"id":"CVE-2026-12583","aliases":["EUVD-2026-43627","GHSA-cxqr-jhpf-63mm"],"status":"published","title":"Newsletters \u003c 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field","description":"The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.02027,"percentile":0.81179,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-07-14T06:00:02Z","modified":"2026-07-14T16:42:11Z","exploits":[{"source":"nuclei","id":"CVE-2026-12583","title":"Newsletters \u003c 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-12583.yaml"}],"products":[{"vendor":"tribulant software","product":"newsletters"},{"vendor":"unknown","product":"newsletters"}],"references":[{"url":"https://wpscan.com/vulnerability/e4c44105-f43d-4dff-8487-7d8ae2691c4e/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12583"},{"url":"https://wpscan.com/vulnerability/e4c44105-f43d-4dff-8487-7d8ae2691c4e"},{"url":"https://github.com/advisories/GHSA-cxqr-jhpf-63mm"}],"sources":{"cve":[{"id":"CVE-2026-12583","title":"Newsletters \u003c 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field","description":"The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.","status":"published","published":"2026-07-14T06:00:02.66Z","modified":"2026-07-14T12:28:44.066Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:19:48.461833Z"}],"euvd":[{"id":"EUVD-2026-43627","description":"The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.","status":"published","published":"2026-07-14T06:00:02Z","modified":"2026-07-14T12:28:44Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:00.206712Z"}],"ghsa":[{"id":"GHSA-cxqr-jhpf-63mm","title":"The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input...","description":"The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.","status":"published","published":"2026-07-14T06:31:23Z","modified":"2026-07-14T15:33:20Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:09:27.635559Z"}],"nvd":[{"id":"CVE-2026-12583","description":"The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.","status":"published","published":"2026-07-14T06:17:05.9Z","modified":"2026-07-14T16:42:11.91Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:29.114188Z"}]}}