PT-2026-27203 · Blinko · Blinko

Tx1Ee · Published 2026-03-23 · Updated 2026-03-23 · CVE-2026-23480

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Blinko versions prior to 1.8.4

Description Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, a privilege escalation issue exists. The upsertUser API endpoint is missing superAdminAuthMiddleware, allowing any logged-in user to call it. The originalPassword parameter is optional, and if not provided, password verification is skipped. Additionally, there is no ownership verification performed, specifically checking if input.id equals ctx.id. This could allow any authenticated user to modify other users' passwords, escalate privileges to superadmin, and potentially take complete account control.

Recommendations Update to version 1.8.4 or later.

Exploit

Fix

Authentication Bypass Using an Alternate Path or Channel

Weakness Enumeration

CWE-288

Related Identifiers

CVE-2026-23480

GHSA-R3MV-Q7WW-86P6

Affected Products

Blinko

References · 6

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23480.json · Exploit
• https://github.com/blinkospace/blinko/security/advisories/GHSA-r3mv-q7ww-86p6 · Vendor Advisory
• https://github.com/blinkospace/blinko/commit/3afbdf486b6f371bdac5781dea6289749f2c4c03 · Patch
• https://osv.dev/vulnerability/CVE-2026-23480 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23480 · Security Note
• https://github.com/blinkospace/blinko/releases/tag/1.8.4 · Note