CVE-2026-85607— Blinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC Router
Quick assessment
Affected
blinkospace blinko
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Blinko 1.8.7 在多个 tRPC 过程（包括 、 、 、 （位于 ）以及 （位于 ）中存在授权绕过（IDOR）漏洞。尽管这些过程需要身份验证，但它们在查询数据库时，仅根据调用方提供的对话或消息 ID 进行检索，却未验证该资源是否属于当前请求的账户。因此，任何已通过身份验证的用户都可以通过枚举顺序整数 ID，读取其他用户的完整 AI 聊天历史记录、修改单条消息内容，或删除或清空整个对话。
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| blinkospace | blinko | ≤ 1.8.8 |
affected |
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I. Basic Information for CVE-2026-85607
Vulnerability Information
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Vulnerability Title
Blinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC Router
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| blinkospace | blinko | 0 ~ 1.8.8 | - |
|
II. Public POCs for CVE-2026-85607
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-85607 (1)
Proof of Concept for CVE-2026-85607 (3)
Other References for CVE-2026-85607 (1)
IV. Related Vulnerabilities
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Same weakness: CWE-639
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V. Comments for CVE-2026-85607
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