
Joomla core creates a guest account with registration turned off. CVE-2026-90907 (CVSS 6.9): "profile(.)save" never checks login state. 1.5.0–5.4.8 and 6.0.0–6.1.3. Sites with public registration disabled still get guest users. Fixed 25 Sep in 5.4.9 and 6.1.4! https://github.com/aorozco-sys/CVE-2026-90907 #Cybersecurity #AI #AISecurity #MCP #Claude #GPT #Infosec #Trending #Joomla #AuthBypass #AppSec
