CVE-2026-73059
stoatchat before 0.15.0 Permission Bypass via message_fetch
- State
- Published
- Severity
- 7.1 High
- Published
- Aug 16, 2026
- Updated
- Aug 17, 2026
- Reserved
- Aug 10, 2026
Description
stoatchat before 0.15.0 contains a permission bypass vulnerability in the message_fetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Attackers with ViewChannel access but ReadMessageHistory denied can retrieve individual message content by ID, bypassing the intended history restriction enforced by bulk read routes.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
stoatchatstoatchat |
|
References
- GitHub Security Advisory (GHSA-8qp4-h9xf-2vqr)vendor-advisory
- VulnCheck Advisory: stoatchat before 0.15.0 Permission Bypass via message_fetchthird-party-advisory
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