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TI-2026-18921 Aliases CVE-2026-23488

Blinko: multiple interfaces in the comment feature allow unauthorized access

Priority LOW 36CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00316 24th percentileScored 2026-11-07
Fix Fixed blinko (blinkospace): 1.8.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
blinkospaceblinkobefore 1.8.41.8.4Patch availableCNA
  • blinko Vendorblinkospace Affected before 1.8.4 Fixed in 1.8.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:*before 1.8.4Vulnerableblinkospace
  • cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:* Versions before 1.8.4 Vulnerable ·blinkospace

Remediation

  • Fix · CNA blinko (blinkospace) Fixed in 1.8.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23488

References

Patch 1

Advisory 1

Other 2

  • TI-2026-19240 Blinko: Admin RCE - MCP Server Command Injection CVSS 4.0HIGH 8.6
  • TI-2026-18915 Blinko: Unauthorized Arbitrary File Read - /api/file/temp CVSS 4.0HIGH 8.2
  • TI-2026-18919 Blinko: Unauthorized User Information Leak CVSS 4.0MEDIUM 6.9
  • TI-2026-18916 Blinko: Unauthorized Arbitrary File Read - /plugins CVSS 4.0MEDIUM 6.9
  • TI-2026-18918 Blinko: Unauthorized Path Traversal File Enumeration - music-metadata CVSS 4.0MEDIUM 6.9
  • TI-2026-18913 Blinko: Low Privilege User Privilege Escalation - upsertUser Endpoint CVSS 4.0MEDIUM 5.3
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences