What’s Vulnerable › Vulnerabilities

CVE-2020-24599

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-08-26 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in Joomla! before 3.9.21. Lack of escaping in mod_latestactions allows XSS attacks.

Affected products

• Joomla!: from 3.9.0 before 3.9.21 — fixed in 3.9.21

How to fix

Upgrade to a fixed version: Joomla! 3.9.21. Check the vendor advisory for mitigations.

References

• https://developer.joomla.org/security-centre/824-20200801-core-xss-in-mod-latestactions
• https://developer.joomla.org/security-centre/824-20200801-core-xss-in-mod-latestactions

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