CVE-2026-23484 Blinko: Authenticated Arbitrary File Write - saveDevPlugin

Medium 5.3 Published 23 Mar 2026 Updated 25 Mar 2026

Authenticated users can exploit path traversal in Blinko to write arbitrary files, potentially leading to code execution or data modification.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-23484?

CVE-2026-23484 is a medium-severity path traversal vulnerability in blinkospace blinko, published on 23 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Blinko is an AI-powered card note-taking project. In versions from 1.8.3 and prior, the fileName parameter is not filtered, allowing path traversal to write files anywhere on the file system. Moreover, this interface only requires authProcedure (normal user), not superAdminAuthMiddleware. At time of publication, there are no publicly available patches.

Weakness: CWE-22

Which versions are affected by CVE-2026-23484?

It affects 1 product.

Products include Blinko Blinko.

How do I fix CVE-2026-23484?

No fix has been published for CVE-2026-23484 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-23484 being exploited?

There is no known exploitation of CVE-2026-23484 in the wild and no public exploit code.

Sources

Also known as GHSA-7v3f-v6vf-jm9q.