CVE-2026-85607Blinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC Router
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
blinkospace blinko blinkospace:blinko (from the name) | through 1.8.8 | CNA record |
References
- https://github.com/blinkospace/blinko/issues/1218issue-tracking
- https://github.com/blinkospace/blinkoproduct
- https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/message.tstechnical-description
- https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/conversation.tstechnical-description
- https://www.vulncheck.com/advisories/blinko-1.8.7-cross-user-ai-conversation-read-and-write-via-message-trpc-routerthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.