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.
CVE-2011-4850
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 1%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 60.7%
- KEV
- Not listed
Published
December 16, 2011
Last Modified
April 29, 2026
References (2)
- cve@mitrehttp://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
- af854a3a-2127-422b-91ae-364da2661108http://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
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(4)
What is CVE-2011-4850?
CVE-2011-4850 is a none vulnerability published on December 16, 2011. 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…
When was CVE-2011-4850 disclosed?
CVE-2011-4850 was first published in the National Vulnerability Database on December 16, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2011-4850 actively exploited?
CVE-2011-4850 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2011-4850?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4850, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2011-4850
Is Your Infrastructure Affected by CVE-2011-4850?
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