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CVE-2026-74869— stoatchat before 0.15.0 Missing Authorization via Subscribe

Quick assessment

Affected
stoatchat stoatchat
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

stoatchat是stoatchat组织的一款面向办公自动化场景的服务器端即时通讯平台。 stoatchat 0.15.0之前版本存在授权问题漏洞，该漏洞源于Subscribe消息处理器存在缺失授权问题，允许已认证攻击者通过发送带有任意服务器ID的Subscribe消息订阅任意服务器的成员更新主题，从而枚举成员并监控私有服务器成员的个人资料更新。

CVSS 7.7 · High EPSS 0.26% · P18

Affected Version Matrix 2

VendorProduct Version RangeStatus
stoatchat stoatchat < 0.15.0 affected
0.15.0 unaffected
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I. Basic Information for CVE-2026-74869

Vulnerability Information
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Vulnerability Title
stoatchat before 0.15.0 Missing Authorization via Subscribe
Source: CVE Program / CVE List V5
Vulnerability Description
stoatchat before 0.15.0 contains a missing authorization vulnerability in the Subscribe message handler that allows authenticated attackers to enumerate members and monitor profile updates of private servers without membership. Attackers can subscribe to any server's member-update topic by sending a Subscribe message with an arbitrary server ID, receiving live UserUpdate events including display names, avatars, and status changes for members they should not have access to.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
stoatchat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
stoatchat是stoatchat组织的一款面向办公自动化场景的服务器端即时通讯平台。 stoatchat 0.15.0之前版本存在授权问题漏洞，该漏洞源于Subscribe消息处理器存在缺失授权问题，允许已认证攻击者通过发送带有任意服务器ID的Subscribe消息订阅任意服务器的成员更新主题，从而枚举成员并监控私有服务器成员的个人资料更新。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
stoatchat stoatchat 0 ~ 0.15.0 -

II. Public POCs for CVE-2026-74869

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8422 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-74869

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Vendor Advisories for CVE-2026-74869 (2)

IV. Related Vulnerabilities

Same product: stoatchat
Same vendor: stoatchat
Same weakness: CWE-862

V. Comments for CVE-2026-74869

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