What’s Vulnerable › Vulnerabilities

CVE-2021-23131: [20210305] - Core - Input validation within the template manager

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% 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-20

Description

An issue was discovered in Joomla! 3.2.0 through 3.9.24. Missing input validation within the template manager.

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

• https://developer.joomla.org/security-centre/845-20210305-core-input-validation-within-the-template-manager.html
• https://developer.joomla.org/security-centre/845-20210305-core-input-validation-within-the-template-manager.html

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