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CVE-2026-63647— CordysCRM SSE Notification Stream Hijack via `/sse/subscribe`

Quick assessment

Affected
1Panel-dev CordysCRM
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.

CordysCRM 是一个支持私有化部署的开源 AI 驱动的客户关系管理系统。在 1.7.2 版本之前， 中的 、 和 端点对匿名访问开放。这是因为 方法将 SSE 路径配置为公共路径，允许未经身份验证的请求访问；同时，这些端点信任调用者传入的 参数，而非从已认证的用户身份（principal）中推导用户标识。 由于缺乏基于会话的身份验证机制，未认证的调用者可以： 通过 读取其他用户的工作流事件、审批请求、提及消息和警报； 通过 向其他用户的流中注入 消息； 通过 终止其他用户的 SSE 连接。 该漏洞已在 1.7

CVSS 9.3 · Critical

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2026-63647

Vulnerability Information
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Vulnerability Title
CordysCRM SSE Notification Stream Hijack via `/sse/subscribe`
Source: CVE Program / CVE List V5
Vulnerability Description
CordysCRM is an open source AI-powered customer relationship management system that supports private deployment. Prior to 1.7.2, SseController exposes the anonymous /sse/subscribe, /sse/broadcast, and /sse/close endpoints because ShiroFilter.addPublicPathFilters permits the SSE paths, and the endpoints trust the caller-controlled userId instead of deriving an identity from an authenticated principal. An unauthenticated caller can use /sse/subscribe to read another user's workflow events, approval requests, mentions, and alerts, use /sse/broadcast to inject SYSTEM_HEARTBEAT messages into another user's stream, or use /sse/close to terminate another user's channel. This vulnerability is fixed in 1.7.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
1Panel-dev CordysCRM < 1.7.2 -

II. Public POCs for CVE-2026-63647

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III. Intelligence Information for CVE-2026-63647

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Patches & Fixes for CVE-2026-63647 (2)

Vendor Advisories for CVE-2026-63647 (1)

Other References for CVE-2026-63647 (1)

Same Patch Batch · 1Panel-dev · 2026-09-18 · 7 CVEs total

CVE-2026-63646 6.9 MEDIUM CordysCRM MCP Form Configuration Endpoint Exposed to Anonymous Users
CVE-2026-76900 6.8 MEDIUM CordysCRM: SSRF via Approval Flow Webhook Execution due to Missing SSRF Validation at Runt
CVE-2026-76901 5.8 MEDIUM CordysCRM: Broken object-level authorization in lead pool and account pool detail endpoint
CVE-2026-76899 5.7 MEDIUM CordysCRM: Authenticated SQL injection via `sort.name` on `POST /account-pool/page`
CVE-2026-52745 5.3 MEDIUM CordysCRM: Customer Public Pool Sorting Field SQL Injection
CVE-2026-76902 5.0 MEDIUM CordysCRM: Unauthenticated arbitrary file disclosure via `/attachment/preview/{id}` and `/

IV. Related Vulnerabilities

Same product: CordysCRM
Same vendor: 1Panel-dev
Same weakness: CWE-306

V. Comments for CVE-2026-63647

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