Description
Incorrect authorization in the XML-RPC API of WebPros Plesk before 18.0.78.4 allows a low-privileged authenticated customer to look up domains they do not own, because ownership is enforced only for certain lookup filters and schema validation is bypassed for legacy protocol versions. This results in cross-tenant disclosure of other tenants' FTP credentials stored in cleartext, which can be leveraged to execute code as another tenant's system user.
Published: 2026-07-08
Score: 9.9 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 08 Jul 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Webpros
Webpros plesk
Vendors & Products Webpros
Webpros plesk

Wed, 08 Jul 2026 01:00:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in the XML-RPC API of WebPros Plesk before 18.0.78.4 allows a low-privileged authenticated customer to look up domains they do not own, because ownership is enforced only for certain lookup filters and schema validation is bypassed for legacy protocol versions. This results in cross-tenant disclosure of other tenants' FTP credentials stored in cleartext, which can be leveraged to execute code as another tenant's system user.
Weaknesses CWE-522
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

Subscriptions

Webpros Plesk
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-07-08T00:15:43.120Z

Reserved: 2026-06-23T15:00:03.632Z

Link: CVE-2026-56843

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-08T02:30:16Z

Weaknesses