CVE-2026-23480

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.

Score

CVSS 3.1 8.8 High

Status

Analyzed - security-advisories@github.com

Published

2026-03-23

Last modified

2026-03-24

Weaknesses

CWE-288

Affected products

• Blinko (Blinko)
• Blinko (Blinkospace)

References

• https://github.com/blinkospace/blinko/commit/3afbdf486b6f371bdac5781dea6289749f2c4c03
• https://github.com/blinkospace/blinko/releases/tag/1.8.4
• https://github.com/blinkospace/blinko/security/advisories/GHSA-r3mv-q7ww-86p6