PT-2026-27203 · Blinkospace · Blinko

Published 2026-03-23 · Updated 2026-03-23 · CVE-2026-23480

Mitre

CVSS v4.0

5.3

Medium

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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.

Fix

Authentication Bypass Using an Alternate Path or Channel

Weakness Enumeration

CWE-288

Related Identifiers

CVE-2026-23480

Affected Products

Blinko

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-23480 · Security Note
• https://github.com/blinkospace/blinko/security/advisories/GHSA-r3mv-q7ww-86p6 · Note
• https://github.com/blinkospace/blinko/commit/3afbdf486b6f371bdac5781dea6289749f2c4c03 · Note
• https://github.com/blinkospace/blinko/releases/tag/1.8.4 · Note