What’s Vulnerable › Vulnerabilities

CVE-2019-7742

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-02-12 · updated 2026-06-17
• Weakness: CWE-79

Description

An issue was discovered in Joomla! before 3.9.3. A combination of specific web server configurations, in connection with specific file types and browser-side MIME-type sniffing, causes an XSS attack vector.

Affected products

• Joomla!: from 1.0.0 through 3.9.2

References

• https://developer.joomla.org/security-centre/766-20190202-core-browserside-mime-type-sniffing-causes-xss-attack-vectors
• https://developer.joomla.org/security-centre/766-20190202-core-browserside-mime-type-sniffing-causes-xss-attack-vectors

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