CVE-2011-4855
The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 omits the Content-Type header's charset parameter for certain resources, which might allow remote attackers to have an unspecified impact by leveraging an interpretation conflict…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 omits the Content-Type header's charset parameter for certain resources, which might allow remote attackers to have an unspecified impact by leveraging an interpretation conflict involving admin/customer-service-plan/list/reset-search/true/ and certain other files. NOTE: it is possible that only clients, not the Plesk product, could be affected by this issue.
- CVSS 2.0
- 9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
- EPSS
- 1.62% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- parallels/parallels plesk panel
- Source
- cve@mitre.org
EPSS 1.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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/72092
- 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/72092
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.