WebPros security advisory (AV26-815)
Serial Number: AV26-815 Date: August 13, 2026 As of August 12, 2026, WebPros is affected by a vulnerability in the following product: Plesk (Windows/Linux) Prior to 18.0.79.6 Prior to 18.0.80.2 The Cyber Centre encourages users and administrators to review the provided web link and apply any necessary updates as they become available. Vulnerability CVE-2026-64639: Privilege Escalation via Database Cloning in Plesk
CSIRTS triage
- What
- A privilege escalation vulnerability exists in Plesk via database cloning.
- Who is affected
- Plesk users on Windows and Linux running versions before 18.0.79.6 and 18.0.80.2.
- Urgency
- Moderate; no active exploitation reported but privilege escalation allows attacker persistence.
- Action
- Upgrade to Plesk 18.0.79.6 or 18.0.80.2 or later.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://cyber.gc.ca/en/alerts-advisories/webpros-security-advisory-av26-815
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-646390.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-64639 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
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