CVE-2026-74869

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.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/stoatchat/stoatchat/security/advisories/GHSA-jj3j-9qr7-jgfc
https://www.vulncheck.com/advisories/stoatchat-before-missing-authorization-via-subscribe

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-17 11:16

Updated : 2026-08-17 16:17

NVD link : CVE-2026-74869

Mitre link : CVE-2026-74869

CVE.ORG link : CVE-2026-74869

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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