CVE-2011-4856: n/a vulnerability

CVE-2011-4856: The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 sends incorrect Content-Type headers for...

The Control Panel in Parallels Plesk Panel 10.4.4_build20111103.18 sends incorrect Content-Type headers for certain resources, which might allow remote attackers to have an unspecified impact by leveraging an interpretation conflict involving admin/health/parameters and certain other files. NOTE: it is possible that only clients, not the Plesk product, could be affected by this issue.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 00:16 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE describes a legacy Parallels Plesk Panel issue where the Control Panel may send wrong Content-Type headers. That could let a browser interpret some resources differently than intended. The public record does not define the actual business impact and notes the issue may affect clients rather than Plesk itself. Exposure is most plausible where the exact legacy Plesk Panel build is still deployed and its Control Panel resources are reachable. The sources do not prove broader version exposure or whether the product itself is affected versus client-side browser handling. Treat this as a legacy exposure cleanup item unless your environment still runs the named Plesk build. Urgency increases if the Control Panel is internet-facing, but the public evidence is too incomplete to rate it as high confidence emergency work. Mitigation focus: Check current Plesk or Parallels vendor guidance for this CVE and affected builds.; Inventory and retire any Plesk Panel 10.4.4_build20111103.18 deployments.; Restrict Control Panel access to trusted administrators and management networks..

Prepared: Jun 27, 2026, 17:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 16, 2011, 11:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
plesk-contenttype-unspecified(72091)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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