CVE-2026-23481 Blinko: Authenticated Arbitrary File Write - saveAdditionalDevFile
Authenticated attackers can write arbitrary files via the saveAdditionalDevFile function, 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-2026-23481?
CVE-2026-23481 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. 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-23481?
It affects 1 product.
Products include Blinko Blinko.
How do I fix CVE-2026-23481?
No fix has been published for CVE-2026-23481 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-2026-23481 being exploited?
There is no known exploitation of CVE-2026-23481 in the wild and no public exploit code.
Other vulnerabilities in blinkospace blinko
- CVE-2026-23882 Blinko: Admin RCE - MCP Server Command Injection
- CVE-2026-23482 Blinko: Unauthorized Arbitrary File Read - /api/file/temp
- CVE-2026-23483 Blinko: Unauthorized Arbitrary File Read - /plugins
- CVE-2026-23485 Blinko: Unauthorized Path Traversal File Enumeration - music-metadata
- CVE-2026-23486 Blinko: Unauthorized User Information Leak
Sources
Also known as GHSA-38hg-8p2j-76g5.