CVE-2026-42562 — Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)
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 …
Published: 2026-05-09 · CVSS: 8.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7