CVE-2026-85607
highBlinko 1.8.7 contains an authorization bypass (IDOR) vulnerability in multiple tRPC procedures (message.list, message.update, message.delete, message.clearAfte…
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/blinkospace/blinko disclosure@vulncheck.com
- https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/conversation.ts disclosure@vulncheck.com
- https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/message.ts disclosure@vulncheck.com
- https://github.com/blinkospace/blinko/issues/1218 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/blinko-1.8.7-cross-user-ai-conversation-read-and-writ... disclosure@vulncheck.com
- https://github.com/blinkospace/blinko/issues/1218 134c704f-9b21-4f2e-91b3-4a467353bcc0