CVE-2026-23481: Blinko: Authenticated Arbitrary File Write - saveAdditionalDevFile

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-23 · updated 2026-06-17
Weakness: CWE-22

Description

Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, there is an authenticated arbitrary file write vulnerability in saveAdditionalDevFile. This issue has been patched in version 1.8.4.

Affected products

blinkospace blinko: before 1.8.4 — fixed in 1.8.4

How to fix

Upgrade to a fixed version: blinkospace blinko 1.8.4. Check the vendor advisory for mitigations.

References

https://github.com/blinkospace/blinko/commit/02a4205f1ad22d0e78dc2ab2967b551d0dbd0a06
https://github.com/blinkospace/blinko/releases/tag/1.8.4
https://github.com/blinkospace/blinko/security/advisories/GHSA-38hg-8p2j-76g5

Get alerted when CVE-2026-23481 or the next vulnerability affects your stack