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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…

Critical9.9EPSS 0.40%
Published
Updated
Reserved
Assigned by
hackerone

Description

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.

Scores

CVSS scores of CVE-2026-68488, by who scored it
Scored byCVSSScoreVector
hackeroneCNA (assigner)3.0Critical9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVDNVD · Awaiting Analysis3.0Critical9.9CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.40% · top 66% of all CVEs (5 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.9.

Weakness

Affected products

  • WebPros · Plesk

    • affected ≤ 18.0.80.6
    • affected ≤ 18.0.79.10

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .