Webhook Token Disclosure in Stoatchat by Stoat Technologies
CVE-2025-71388

7.6HIGH

Key Information:

Vendor

Stoatchat

Status
Stoatchat
Vendor
CVE Published:
16 July 2026

What is CVE-2025-71388?

The Stoatchat application from Stoat Technologies contains a vulnerability that allows users with only read permissions on a channel to access and exploit webhook tokens. This misconfiguration occurs because the webhook fetch endpoint erroneously checks for ViewChannel permissions instead of the more restrictive ManageWebhooks rights. Consequently, attackers can retrieve sensitive tokens and send arbitrary messages to the channel, effectively bypassing existing channel permissions and impersonating a bot or webhook. The vulnerability has been addressed in version 20250210-1 (0.8.2), which restricts access to the webhook tokens appropriately.

Affected Version(s)

stoatchat 20241213-1 < 20250210-1

stoatchat 20250210-1

References

https://github.com/stoatchat/stoatchat/security/advisorie...
vendor-advisory
https://github.com/stoatchat/stoatchat/commit/e3723d647ef...
patch
https://www.vulncheck.com/advisories/stoatchat-20241213-1...
third-party-advisory

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.