CVE-2025-71388

High

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).

SeverityHigh

CVSS7.6

Exploit probability—

ProductStoatchat

PublishedJul 16, 2026

First seenJul 16, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

stoatchat stoatchat20250210-1 or later

Patches

github.com/stoatchat/stoatchat/commit/e3723d647effb81ea3d3919d848faf64dbe89829

Vendor advisories

github.com/stoatchat/stoatchat/security/advisories/GHSA-8684-rvfj-v3jq

Affected products

Product	Affected versions	Fixed in
stoatchat stoatchat	20241213-1 ≤ v < 20250210-1	20250210-1

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