by Kastro
Paper/Archive/CVE-2026-68488

CVE-2026-68488

WebPros Plesk — A Time-of-check Time-of-use (TOCTOU) race condition leading to insecure symlink following in Plesk causes local privilege escalation to r…

EPSS 0.4%CVSS 9.9
critical.is priorityof 100
37
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 33.9.339 × 206.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Plesk≤ 18.0.80.6–CNA
Plesk≤ 18.0.79.10–CNA

Scores by source

hackerone (CNA)9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refsupport.plesk.com/hc/en-us/articles/43248932867351-Vulnerability-in-Plesk-s-Backup-Manager-symlink-race-during-restore-allows-root-privilege-escalation