What’s Vulnerable › Vulnerabilities

CVE-2020-13763

• 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: 2020-06-02 · updated 2026-06-17
• Weakness: CWE-281

Description

In Joomla! before 3.9.19, the default settings of the global textfilter configuration do not block HTML inputs for Guest users.

Affected products

• Joomla!: from 2.5.1 before 3.9.19; 2.5.0, 2.5.0-beta1, 2.5.0-beta2, 2.5.0-rc1 — fixed in 3.9.19

How to fix

Upgrade to a fixed version: Joomla! 3.9.19. Check the vendor advisory for mitigations.

References

• https://developer.joomla.org/security-centre/814-20200602-core-inconsistent-default-textfilter-settings
• https://developer.joomla.org/security-centre/814-20200602-core-inconsistent-default-textfilter-settings

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