Paper/Archive/CVE-2026-64639

CVE-2026-64639

WebPros Plesk — Incorrect database cloning process in Plesk from 18.0.52 before 18.0.79.6 and 18.0.80.2 allows a low-privileged user (customer, reseller)…

EPSS 0.6%CVSS 9.3

critical.is priorityof 100

CVSS 9.3 (CNA)9.3 / 10 × 3027.9 Not in CISA KEV+300.0 EPSS percentile 46.2.462 × 209.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Incorrect database cloning process in Plesk from 18.0.52 before 18.0.79.6 and 18.0.80.2 allows a low-privileged user (customer, reseller) to execute arbitrary code on behalf of the database server administrator.

Affected

ProductAffectedFixed inSource

Plesk18.0.52 – < 18.0.79.618.0.79.6CNA

Plesk18.0.80.0 – < 18.0.80.218.0.80.2CNA

Scores by source

hackerone (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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

References

refsupport.plesk.com/hc/en-us/articles/42521305418903-Vulnerability-CVE-2026-64639-Privilege-Escalation-via-Database-Cloning-in-Plesk