CVE-2026-85607

Description

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.

References

https://www.vulncheck.com/advisories/blinko-1.8.7-cross-user-ai-conversation-read-and-write-via-message-trpc-router

https://github.com/blinkospace/blinko/issues/1218

https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/message.ts

https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/conversation.ts

https://github.com/blinkospace/blinko

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS