Paper/Archive/CVE-2026-64637

CVE-2026-64637

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

EPSS 0.5%CVSS 9.9

critical.is priorityof 100

CVSS 9.9 (CNA)9.9 / 10 × 3029.7 Not in CISA KEV+300.0 EPSS percentile 40.8.408 × 208.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Plesk< 18.0.80.118.0.80.1CNA

Scores by source

hackerone (CNA)9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refsupport.plesk.com/hc/en-us/articles/42432168683799