Local File Inclusion Vulnerability in Joomla Products by Joomla
CVE-2026-40383

7.5HIGH

Key Information:

Vendor

Joomla
Status
Joomla! Cms
Vendor
CVE Published:
26 May 2026

What is CVE-2026-40383?

An improperly validated input from users in Joomla products can allow for unauthorized access to local files, potentially exposing sensitive data and compromising system integrity. This vulnerability emphasizes the importance of rigorous input validation to safeguard web applications from exploitation.

Affected Version(s)

Joomla! CMS 3.2.1-5.4.5

Joomla! CMS 6.0.0-6.1.0

References

https://developer.joomla.org/security-centre/1041-2026050...
vendor-advisory

CVSS V4

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Doyensec in collaboration with Claude and Anthropic Research
.