CVE-2025-71388

stoatchat 20241213-1 Webhook Token Disclosure via Read Permissions

State: Published
Severity: 7.6 High
Published: Jul 16, 2026
Updated: Jul 20, 2026
Reserved: Jul 16, 2026

Description

stoatchat (delta/Revolt) versions from 20241213-1 before 20250210-1 allow users with only ViewChannel (read) permission on a channel to fetch that channel's webhooks, including their tokens, because the webhook fetch endpoint checked for ViewChannel instead of ManageWebhooks. Using a retrieved token, an attacker can send arbitrary messages to the channel, bypassing channel permissions and impersonating a bot or webhook. Fixed in 20250210-1 (0.8.2).

Scores

CVSS	Score	Vector	Source
4.0	7.6 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key

Affected Products

Product	Versions
stoatchatstoatchat	20241213-1 to before 20250210-1Affected 20250210-1Not affected

References

GitHub Security Advisory (GHSA-8684-rvfj-v3jq)vendor-advisory
https://github.com/stoatchat/stoatchat/commit/e3723d647effb81ea3d3919d848faf64dbe89829patch
VulnCheck Advisory: stoatchat 20241213-1 Webhook Token Disclosure via Read Permissionsthird-party-advisory

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