CVE-2026-75891 The Kirki plugin for WordPress is vulnerable to Privilege Escalation via PHP Object Injection in all versions up to, and including, 6.2.5 vi
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-75891?
CVE-2026-75891 is a high-severity vulnerability in themeum Kirki – Freeform Page Builder, Website Builder & Customizer, published on 27 Oct 2026.
Official 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.
Weakness: CWE-502
Which versions are affected by CVE-2026-75891?
How do I fix CVE-2026-75891?
No fix has been published for CVE-2026-75891 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75891 being exploited?
There is no known exploitation of CVE-2026-75891 in the wild and no public exploit code.
Sources
Also known as GHSA-ppv3-rhmr-8mqr.