Read the docs
TI-2026-58732 Aliases CVE-2026-85607GHSA-2rx6-45h4-gf4q

Blinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC Router

Priority HIGH 73CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

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

Summary

Blinko 1.8.7 contains an authorization bypass (IDOR) vulnerability in multiple tRPC procedures (message.list, message.update, message.delete, message.clearAfter in server/routerTrpc/message.ts and conversation.clearMessages in server/routerTrpc/conversation.ts). Although these procedures require authentication, they query the database by caller-supplied conversation or message ID without verifying that the resource belongs to the requesting account. Any authenticated user can therefore read another user's full AI chat history, modify individual message content, and delete or wipe entire conversations by enumerating sequential integer IDs.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00689 53rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
blinkospaceblinkoup to 1.8.8—No fix listedCNA
  • blinko Vendorblinkospace Affected up to 1.8.8 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:*——blinkospace
  • cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:* Versions — — ·blinkospace

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-85607
  2. 2026-10-03 Alias added: GHSA-2rx6-45h4-gf4q

References

Other 4

  • TI-2026-70828 Path traversal in Blinko plugin install overwrites startup files CVSS 3.1HIGH 8.8
  • TI-2026-58749 Blinko 1.8.7 Cross-User Private Note Disclosure via noteReferenceList CVSS 4.0HIGH 7.1
  • TI-2026-74433 Broken access control in Blinko lets users read private attachments CVSS 4.0MEDIUM 6.0
  • 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
See all 14 →

Sources

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