Parallels Plesk Small Business Panel 10.2.0 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 cookie, as demonstrated by cookies to client@1/domain@1/hosting/file-manager/ and certain other files.
Conclusion & alert: CVE-2011-4755 is rated High Risk (66.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.86%). Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-03-30 | 3.54% | 1.86% | -1.68% |
| 2 | 2025-03-29 | 1.86% | 3.54% | +1.68% |
| 3 | 2025-03-17 | — | 1.86% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| parallels | parallels_plesk_small_business_panel | 10.2.0 | cpe:2.3:a:parallels:parallels_plesk_small_business_panel:10.2.0:*:*:*:*:*:*:* |