Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Blinko | Blinko | < 1.8.4 |
Related Weaknesses (CWE)
References
- https://github.com/blinkospace/blinko/commit/3afbdf486b6f371bdac5781dea6289749f2Patch
- https://github.com/blinkospace/blinko/releases/tag/1.8.4Release Notes
- https://github.com/blinkospace/blinko/security/advisories/GHSA-r3mv-q7ww-86p6Vendor Advisory
FAQ
What is CVE-2026-23480?
CVE-2026-23480 is a vulnerability with a CVSS score of 8.8 (HIGH). 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, a...
How severe is CVE-2026-23480?
CVE-2026-23480 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23480?
Check the references section above for vendor advisories and patch information. Affected products include: Blinko Blinko.