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Vulnerability record · CVE-2026-64637 · published 7 August 2026

CVE-2026-64637: Improper privilege management vulnerability

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.

9.9 CVSS 3.0 Critical EPSS 0.47% · top 61.7% CWE-269 · Improper privilege management Awaiting Analysis
9.9CVSS 3.0 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
3 Sep 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://support.plesk.com/hc/en-us/articles/42432168683799

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Source: NIST National Vulnerability Database (record CVE-2026-64637), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.