CVE-2011-4856

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-12-16 · updated 2026-06-16

Description

The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 sends incorrect Content-Type headers for certain resources, which might allow remote attackers to have an unspecified impact by leveraging an interpretation conflict involving admin/health/parameters and certain other files. NOTE: it is possible that only clients, not the Plesk product, could be affected by this issue.

Affected products

Parallels Plesk Panel: 10.4.4_build20111103.18

References

http://xss.cx/kb/parallels/xss-parallelspleskpanel.v10.4.4_build20111103.18-os_windows-2003-2008-reflected-cross-site-scripting-cwe79-capec86-javascript-injection-example-poc-report.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/72091
http://xss.cx/kb/parallels/xss-parallelspleskpanel.v10.4.4_build20111103.18-os_windows-2003-2008-reflected-cross-site-scripting-cwe79-capec86-javascript-injection-example-poc-report.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/72091

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