The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 does not include the HTTPOnly flag in a Set-Cookie header for a cookie, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie, as demonstrated by cookies used by help.php and certain other files.
Conclusion & alert: CVE-2011-4850 is rated Moderate Risk (41.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.29%). Mandatory action: Review affected assets and schedule 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 | 2024-09-17 | 0.17% | 0.29% | +0.12% |
| 2 | 2024-02-08 | 0.29% | 0.17% | -0.12% |
| 3 | 2023-03-07 | — | 0.29% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| parallels | parallels_plesk_panel | 10.4.4_build20111103.18 | cpe:2.3:a:parallels:parallels_plesk_panel:10.4.4_build20111103.18:*:*:*:*:*:*:* |