CVE-2026-74869
stoatchat before 0.15.0 Missing Authorization via Subscribe
- State
- Published
- Severity
- 8.3 High
- Published
- Aug 17, 2026
- Updated
- Aug 17, 2026
- Reserved
- Aug 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.3 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N | VulnCheck |
| 3.1 | 7.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
stoatchatstoatchat |
|
References
- GitHub Security Advisory (GHSA-jj3j-9qr7-jgfc)vendor-advisory
- VulnCheck Advisory: stoatchat before 0.15.0 Missing Authorization via Subscribethird-party-advisory
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