HOMEVULNERABILITIESCVE-2011-4855
CRITICAL

CVE-2011-4855

NVD-CWE-OtherPublished: December 16, 2011· Updated: Jun 16, 2026

9.3
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2011-4855 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected Vendors & Products

Microsoft2 product(s)
windows 2003 serverwindows server 2008
parallels1 product(s)
parallels plesk panel
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (4)

→
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

Quick Facts

CVE IDCVE-2011-4855
CVSS Score9.3 / 10
SeverityCRITICAL
WeaknessNVD-CWE-Other
CISA KEVNo
Affected2 vendor(s)
PublishedDec 16, 2011

Related CVEs (NVD-CWE-Other)

CVE-2002-1468
10.0
CVE-1999-0745
10.0
CVE-2001-1080
10.0
CVE-1999-1405
10.0
CVE-2002-0747
10.0
CVE-1999-0789
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2011-4855 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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