What’s Vulnerable › Vulnerabilities

CVE-2008-5822

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2009-01-02 · updated 2026-06-16
• Weakness: CWE-399

Description

Memory leak in Libxul, as used in Mozilla Firefox 3.0.5 and other products, allows remote attackers to cause a denial of service (memory consumption and browser hang) via a long CLASS attribute in an HR element in an HTML document.

Affected products

• Mozilla Libxul: all versions

References

• http://jbrownsec.blogspot.com/2008/12/new-year-research-are-upon-us.html
• http://www.packetstormsecurity.org/0812-exploits/mzff_libxul_ml.txt
• https://exchange.xforce.ibmcloud.com/vulnerabilities/47758
• http://jbrownsec.blogspot.com/2008/12/new-year-research-are-upon-us.html
• http://www.packetstormsecurity.org/0812-exploits/mzff_libxul_ml.txt
• https://exchange.xforce.ibmcloud.com/vulnerabilities/47758

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