Two-Factor Authentication Bypass in Joomla Core
CVE-2026-48896

8.2HIGH

Key Information:

Vendor

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

What is CVE-2026-48896?

A vulnerability in the Joomla core allows attackers to bypass two-factor authentication (2FA) mechanisms due to insufficient state checks. This oversight can lead to unauthorized access, enabling malicious actors to exploit user accounts without necessary robust authentication measures. Users of Joomla 3.x and 4.x should take immediate action to mitigate risks associated with this vulnerability by updating their systems and implementing enhanced security protocols.

Affected Version(s)

Joomla! CMS 4.0.0-5.4.5

Joomla! CMS 6.0.0-6.1.0

References

https://developer.joomla.org/security-centre/1043-2026051...
vendor-advisory

CVSS V4

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
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
Christos Papakonstantinou, Cantina
.