CVE-2026-73059

MEDIUM 6.5

stoatchat before 0.15.0 Permission Bypass via message_fetch

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	stoatchat
Product	stoatchat
Published	Aug 16, 2026

Stay Ahead of the Next One

Get instant alerts for stoatchat stoatchat

Be the first to know when new medium vulnerabilities affecting stoatchat stoatchat are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

stoatchat / stoatchat

0 < 0.15.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/stoatchat/stoatchat/security/advisories/GHSA-8qp4-h9xf-2vqr vulncheck.com: https://www.vulncheck.com/advisories/stoatchat-before-permission-bypass-via-message-fetch

Credits

🔍 arpitjain099