CVE-2026-23480
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.
How to fix
- blinko blinko1.8.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| blinko blinko | v < 1.8.4 | 1.8.4 |
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