CVE-2026-57744 WordPress RT-Theme 18 | Extensions plugin <= 2.5 - PHP Object Injection vulnerability
An attacker can exploit PHP object injection in the RT-Theme 18 Extensions plugin to potentially execute arbitrary code on the WordPress site.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57744?
CVE-2026-57744 is a critical unsafe deserialization vulnerability in stmcan RT-Theme 18 | Extensions, published on 13 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Deserialization of Untrusted Data vulnerability in stmcan RT-Theme 18 | Extensions rt18-extensions allows Object Injection.This issue affects RT-Theme 18 | Extensions: from n/a through <= 2.5.
Weakness: CWE-502
Which versions are affected by CVE-2026-57744?
How do I fix CVE-2026-57744?
No fix has been published for CVE-2026-57744 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-2026-57744 being exploited?
There is no known exploitation of CVE-2026-57744 in the wild and no public exploit code.
Sources
Also known as GHSA-7fcw-pr2j-6ff2.