CVE-2026-75891

Kirki <= 6.2.5 - Authenticated (Subscriber+) PHP Object Injection to Administrator Account Takeover via 'get-single-symbol' AJAX Endpoint

Published Oct 27, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Themeum
Themeum kirki
Wordpress-extensions
Wordpress-extensions kirki
Vendors & Products Themeum
Themeum kirki
Wordpress-extensions
Wordpress-extensions kirki
Type Values Removed Values Added
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.
Title Kirki <= 6.2.5 - Authenticated (Subscriber+) PHP Object Injection to Administrator Account Takeover via 'get-single-symbol' AJAX Endpoint
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Oct 29, 2026, 1:52 AM
Reserved
Aug 18, 2026, 1:50 PM
Status
Deferred
Published
Oct 27, 2026, 7:16 AM
Modified
Oct 29, 2026, 2:16 AM