Plesk CVE-2026-68488: A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following in Plesk causes
Plesk is affected by CVE-2026-68488. A time-of-check/time-of-use race condition with insecure symlink following in Plesk: local privilege escalation to root. CVSS 9.9, disclosed 2026-09-10. CVSS base score: 9.9.
What this means under a SharedLicense license
Your SharedLicense license itself is not affected — this is a vulnerability in Plesk software, not in licensing. Licenses continue to work during and after the update; there is no need to re-issue or re-activate anything. If you resell Plesk under your own brand, patch client servers too — unpatched installs put your reputation at risk, not your license.
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.
Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-68488
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