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P4
CVE-2026-56843: Plesk 10.4 to before 18.0.78.4
CVE-2026-56843. CVSS 3.1 base score 9.9 (CRITICAL, Vendor/CNA). EPSS 0.00655 (percentile 0.51073), scored 25-Oct-2026.
Affected technology
Plesk · 10.4 to before 18.0.78.4
Webpros
Description’s affected range: before 18.0.78.4
Component: Not specified by the source
Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required
What an attacker can do
Vendor/CNA’s CVSS 3.1 assessment (base score 9.9/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CWE
- CWE-522
- CCR priority
- 39.8 /100 (P4)
- CVSS 3.1
- 9.9 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · Vendor/CNA
- EPSS
- 0.00655 · percentile 0.51073 · 2026-10-25
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-25 21:44:36.062275+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-56843.html