CVE-2026-68488 PUBLISHED

Assigner: hackerone
Reserved: 30.07.2026 Published: 10.09.2026 Updated: 10.09.2026

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.

Metrics

CVSS 3.0

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Score: 9.9

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.0

Product Status

Vendor	WebPros
Product	Plesk
Versions	Default: unaffected affected from 0 to 18.0.80.6 (incl.) affected from 0 to 18.0.79.10 (incl.)

References

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

Problem Types

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