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CVE-2026-65883

CriticalPublished

Joomla Extension - aimy-extensions.com - RCE via PHP object injection in Aimy Captcha-Less Form Guard 18.0 - 20.0

Published: Jul 29, 2026
Updated: Jul 29, 2026
Assigning CNA: Joomla
Evidence observed: Aug 7, 2026

Primary CVSS

10.0/ 10Critical

nvd · CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

0.7%

Low · next 30 days

Percentile: 51.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2026-65883Exploit
Aimy Captcha-Less Form Guard Joomla Component PHP Object Injection RCE. clfgd XOR keystream recovery + unserialize(). CVSS 10.0 | CWE-502 | aimy_captcha-less_form_guard < 20.1

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