CVE-2026-23480
Blinko: Low Privilege User Privilege Escalation - upsertUser Endpoint
- State
- Published
- Severity
- 5.3 Medium
- Published
- Mar 23, 2026
- Updated
- Mar 24, 2026
- Reserved
- Jan 13, 2026
Description
Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, there is a privilege escalation vulnerability. The upsertUser endpoint has 3 issues: it is missing superAdminAuthMiddleware, any logged-in user can call it; the originalPassword is an optional parameter and if not provided password verification is skipped; there is no check for input.id === ctx.id (ownership verification). This could result in any authenticated user modifying other users' passwords, direct escalation to superadmin, and complete account takeover. This issue has been patched in version 1.8.4.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-288 Authentication Bypass Using an Alternate Path or Channel
Affected Products
| Product | Versions |
|---|---|
blinkoblinkospace |
|
References
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