CVE-2026-42562

HighCVSS 8.3/10Last modified Jul 24, 2026

Description

Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.

Metrics

CVSS 3.1 8.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Weakness enumeration

CWE-269

Affected software

No affected versions have been published.

Timeline

Published: May 9, 2026
Last modified: Jul 24, 2026
NVD status: Deferred

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