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CVE-2011-4855

25
FAUCET Score

CVE-2011-4855 describes a vulnerability in Parallels Plesk Panel 10.4.4_build20111103.18 where the Control Panel omits the Content-Type header's charset parameter for specific resources, potentially leading to an interpretation conflict and unspecified impact. This issue primarily affects Parallels Plesk Panel on Microsoft Windows 2003 Server and Windows Server 2008. The vulnerability carries a critical CVSS score of 9.3, indicating a high severity. It is a network-based attack with medium complexity, requiring no authentication, and could lead to complete compromise of confidentiality, integrity, and availability. However, it's noted that only clients, not the Plesk product itself, might be affected. There is no evidence of active exploitation, and no exploit code is publicly available on platforms like Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, with zero mentions or articles reported.

Impacted Technologies

VendorProductVersion(s)CPE
10.4.4_build20111103.18CPE matchmatch criteria
cpe:2.3:a:parallels:parallels_plesk_panel:10.4.4_build20111103.18:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 34th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/72092
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