CVE-2026-42562

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.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/alextselegidis/plainpad/commit/9216a876d27b22c3d9259551636d803f7cb075fc
https://github.com/alextselegidis/plainpad/issues/138
https://github.com/alextselegidis/plainpad/releases/tag/1.1.1
https://github.com/alextselegidis/plainpad/security/advisories/GHSA-pvfv-wvpm-q6f6

Configurations

No configuration.

History

24 Jul 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Plainpad es una aplicación autoalojada para tomar notas. Antes de la versión 1.1.1, Plainpad permite a un usuario autenticado con bajos privilegios autoescalar a administrador al enviar admin=true en PUT /API.PHP/v1/users/{id}. El endpoint persiste directamente el atributo admin de la entrada del usuario, y la cuenta escalada puede acceder inmediatamente a rutas solo para administradores. Este problema ha sido parcheado en la versión 1.1.1.

09 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-09 20:16

Updated : 2026-07-24 21:10

NVD link : CVE-2026-42562

Mitre link : CVE-2026-42562

CVE.ORG link : CVE-2026-42562

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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