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Vulnerability record · CVE-2011-4727 · published 16 December 2011

CVE-2011-4727: Parallels plesk panel improper input validation vulnerability

Parallels · Parallels Plesk Panel

The Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 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 REST URL parameter, as demonstrated by parameters to admin/ and certain other files.

10.0 CVSS 2.0 High EPSS 1.8% · top 21.9% CWE-20 · Improper input validation
10.0CVSS 2.0 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

The Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 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 REST URL parameter, as demonstrated by parameters to admin/ and certain other files.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://xss.cx/examples/plesk-reports/plesk-redhat-el6-psa-10.2.0-build-1011110331.18-xss-sqli-cwe79-cwe89-javascript-inj
https://exchange.xforce.ibmcloud.com/vulnerabilities/72332
http://xss.cx/examples/plesk-reports/plesk-redhat-el6-psa-10.2.0-build-1011110331.18-xss-sqli-cwe79-cwe89-javascript-inj
https://exchange.xforce.ibmcloud.com/vulnerabilities/72332

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2011-4739Parallels plesk panel vulnerabilityThe Control Panel in Parallels Plesk Panel 10.2.0 build 20110407.20 generates a password form field without disabling the autocomplete feature, which…EPSS 2.2%10.0CVE-2011-4743Parallels plesk panel vulnerabilityThe Control Panel in Parallels Plesk Panel 10.2.0 build 20110407.20 omits the Content-Type header's charset parameter for certain resources, which mi…EPSS 1.8%10.0CVE-2011-4744Parallels plesk panel vulnerabilityThe Control Panel in Parallels Plesk Panel 10.2.0 build 20110407.20 sends incorrect Content-Type headers for certain resources, which might allow rem…EPSS 1.8%10.0CVE-2011-4749Parallels plesk panel vulnerabilityThe billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 generates a password form field without disabling the autocomplete feature, wh…EPSS 2.2%10.0CVE-2011-4732Parallels plesk panel vulnerabilityThe Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 omits the Content-Type header's charset parameter for certain reso…EPSS 1.8%10.0CVE-2011-4733Parallels plesk panel vulnerabilityThe Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 sends incorrect Content-Type headers for certain resources, which …EPSS 1.8%10.0CVE-2011-4730Parallels plesk panel vulnerabilityThe Server Administration Panel in Parallels Plesk Panel 10.2.0_build1011110331.18 generates a password form field without disabling the autocomplete…EPSS 2.2%9.3CVE-2011-4851Parallels plesk panel vulnerabilityThe Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 generates a password form field without disabling the autocomplete feature, which …EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2011-4727), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.