CVE-2026-42562
Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)
- State
- Published
- Severity
- 8.3 High
- Published
- May 9, 2026
- Updated
- May 11, 2026
- Reserved
- Apr 28, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.3 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | GitHub_M |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
plainpadalextselegidis |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.