CVE-2026-65883 Joomla Extension - aimy-extensions.com - RCE via PHP object injection in Aimy Captcha-Less Form Guard 18.0 - 20.0
Attackers can achieve remote code execution by injecting PHP objects via a forged field in the Aimy Captcha-Less Form Guard plugin.
- 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-2026-65883?
CVE-2026-65883 is a critical unsafe deserialization vulnerability in aimy-extensions.com Aimy Captcha-Less Form Guard plugin for Joomla, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Extension - aimy-extensions.com - RCE via PHP object injection in Aimy Captcha-Less Form Guard 18.0 - 20.0 - A forged clfgd field allows PHP objection injection and thereby remote code execution.
Weakness: CWE-502
Which versions are affected by CVE-2026-65883?
It affects 1 product.
Products include Aimy-Extensions Aimy Captcha-Less Form Guard.
How do I fix CVE-2026-65883?
No fix has been published for CVE-2026-65883 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-2026-65883 being exploited?
There is no known exploitation of CVE-2026-65883 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-4f62-78r3-84fq.