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Critical · 9.9 CVE-2026-64637 EUVD-2026-54563GHSA-27h3-c9gv-83jx

Improper privilege management in the XML-RPC API of Plesk before 18.0.80, allows an authenticated reseller to obtain an administrative sess…

Published Aug 7, 2026 · Updated Aug 7, 2026 · Assigned by hackerone

Description

Improper privilege management in the XML-RPC API of Plesk before 18.0.80, allows an authenticated reseller to obtain an administrative session for the root user account.

Affected products

VendorProductAffectedFixed
WebPros Plesk < 18.0.80.1 18.0.80.1

References