CVE-2026-12720 Kirki < 6.0.13 - Unauthenticated PHP Object Injection
Unauthenticated attackers can inject PHP objects via stored data, potentially leading to remote code execution when an administrator reviews the data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-12720?
CVE-2026-12720 is a high-severity unsafe deserialization vulnerability in Unknown Kirki, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Kirki WordPress plugin before 6.0.13 does not restrict which classes may be instantiated when it deserialises data that unauthenticated users can store, leading to PHP Object Injection that is triggered when an administrator later reviews the stored data. With a suitable gadget chain present on the site (via another installed Kirki WordPress plugin before 6.0.13, , or an outdated WordPress version), this could be leveraged to perform a variety of attacks, such as remote code execution.
Weakness: CWE-502
Which versions are affected by CVE-2026-12720?
How do I fix CVE-2026-12720?
No fix has been published for CVE-2026-12720 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-12720 being exploited?
There is no known exploitation of CVE-2026-12720 in the wild and no public exploit code.
Sources
Also known as GHSA-rpvq-6gf9-58vg.