What is CVE-2026-68488?

CVE-2026-68488 is a critical-severity vulnerability in Webpros Plesk, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.9/10. Published 2026-09-10.

How severe is CVE-2026-68488?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Webpros Plesk

CVE-2026-68488

A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following in Plesk causes local privilege escalation to root via arbitrary file/directory ownership takeover.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Webpros Plesk

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

support@hackerone.com

Frequently asked questions

What is CVE-2026-68488?: CVE-2026-68488 is a critical-severity vulnerability in Webpros Plesk, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 9.9/10. Published 2026-09-10.
How severe is CVE-2026-68488?: Critical severity. CVSS v3 base score is 9.9 out of 10.