{"id":"CVE-2026-75891","aliases":["EUVD-2026-110629","GHSA-ppv3-rhmr-8mqr"],"status":"published","title":"Kirki \u003c= 6.2.5 - Authenticated (Subscriber+) PHP Object Injection to Administrator Account Takeover via 'get-single-symbol' AJAX Endpoint","description":"The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in all versions up to, and including, 6.2.5 via deserialization of untrusted input through the 'get-single-symbol' branch of the kirki_post_apis() AJAX dispatcher due to a missing capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to overwrite an administrator's password and gain administrative access.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00305,"percentile":0.23588,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-10-27T06:40:42Z","modified":"2026-10-29T02:16:53Z","products":[{"vendor":"themeum","product":"kirki – freeform page builder, website builder \u0026 customizer"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/aecfea73-97fc-48c3-bf1b-5314077739b5?source=cve"},{"url":"https://plugins.trac.wordpress.org/changeset/3677965/kirki"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-75891"},{"url":"https://github.com/advisories/GHSA-ppv3-rhmr-8mqr"}],"sources":{"cve":[{"id":"CVE-2026-75891","title":"Kirki \u003c= 6.2.5 - Authenticated (Subscriber+) PHP Object Injection to Administrator Account Takeover via 'get-single-symbol' AJAX Endpoint","description":"The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in all versions up to, and including, 6.2.5 via deserialization of untrusted input through the 'get-single-symbol' branch of the kirki_post_apis() AJAX dispatcher due to a missing capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to overwrite an administrator's password and gain administrative access.","status":"published","published":"2026-10-27T06:40:42.359Z","modified":"2026-10-29T01:52:00.797Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:20:07.609948Z"}],"euvd":[{"id":"EUVD-2026-110629","description":"The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in all versions up to, and including, 6.2.5 via deserialization of untrusted input through the 'get-single-symbol' branch of the kirki_post_apis() AJAX dispatcher due to a missing capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to overwrite an administrator's password and gain administrative access.","status":"published","published":"2026-10-27T06:40:42Z","modified":"2026-10-29T01:52:00Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:59:18.059516Z"}],"ghsa":[{"id":"GHSA-ppv3-rhmr-8mqr","title":"The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in...","description":"The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in all versions up to, and including, 6.2.5 via deserialization of untrusted input through the 'get-single-symbol' branch of the kirki_post_apis() AJAX dispatcher due to a missing capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to overwrite an administrator's password and gain administrative access.","status":"published","published":"2026-10-27T09:30:58Z","modified":"2026-10-27T09:30:59Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:14:28.078787Z"}],"nvd":[{"id":"CVE-2026-75891","description":"The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in all versions up to, and including, 6.2.5 via deserialization of untrusted input through the 'get-single-symbol' branch of the kirki_post_apis() AJAX dispatcher due to a missing capability check. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to overwrite an administrator's password and gain administrative access.","status":"published","published":"2026-10-27T07:16:32.5Z","modified":"2026-10-29T02:16:53.327Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:13:03.746397Z"}]}}