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CVE-2026-21629

MEDIUM CVSS 4.0: 6.3 EPSS 0.00%
Updated Apr 09, 2026
Joomla
Parameter Value
CVSS 6.3 (MEDIUM)
Affected Versions 3.0.0 — 6.0.4
Fixed In 5.4.4
Type CWE-284 (Improper Access Control)
Vendor Joomla
Public PoC No

The ajax component was excluded from the default logged-in-user check in the administrative area. This behavior was potentially unexpected by 3rd party developers.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Joomla Joomla\!
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
3.0.0 5.4.4
Joomla Joomla\!
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
6.0.0 6.0.4