What’s Vulnerable › Vulnerabilities

CVE-2011-4755

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-12-16 · updated 2026-06-16
• Weakness: CWE-20

Description

Parallels Plesk Small Business Panel 10.2.0 does not properly validate string data that is intended for storage in an XML document, which allows remote attackers to cause a denial of service (parsing error) or possibly have unspecified other impact via a crafted cookie, as demonstrated by cookies to client@1/domain@1/hosting/file-manager/ and certain other files.

Affected products

• Parallels Plesk Small Business Panel: 10.2.0

References

• http://xss.cx/examples/plesk-reports/plesk-10.2.0.html
• https://exchange.xforce.ibmcloud.com/vulnerabilities/72207
• http://xss.cx/examples/plesk-reports/plesk-10.2.0.html
• https://exchange.xforce.ibmcloud.com/vulnerabilities/72207

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