What’s Vulnerable › Vulnerabilities

CVE-2021-23126: [20210301] - Core - Insecure randomness within 2FA secret generation

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-04 · updated 2026-06-17
Weakness: CWE-338

Description

An issue was discovered in Joomla! 3.2.0 through 3.9.24. Usage of the insecure rand() function within the process of generating the 2FA secret.

Affected products

Joomla!: from 3.2.0 before 3.9.25 — fixed in 3.9.25

How to fix

Upgrade to a fixed version: Joomla! 3.9.25. Check the vendor advisory for mitigations.

References

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