# CVE-2025-71388: stoatchat delta authorization bypass in webhook fetch endpoint

Source: https://junglewise.ai/threats/cve-2025-71388-stoatchat-delta-authorization-bypass-in-webhook-fetch-endpoint  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-16. Updated: 2026-07-16  
License: CC BY 4.0 with a link back

CVE-2025-71388 · Severity: info · CVSS 7.6 · Published 2026-07-16

stoatchat, a chat platform based on Revolt, contains a security flaw where users with basic read-only access to a channel can view secret webhook tokens. An attacker can use these tokens to post unauthorized messages, effectively impersonating bots or administrators and bypassing standard channel restrictions. This could lead to misinformation, phishing, or disruption of community operations.

Technologies: [Stoatchat](https://junglewise.ai/threats/technologies/stoatchat). Vendors: [Stoatchat](https://junglewise.ai/threats/vendors/stoatchat).

## Quick answers

**Is CVE-2025-71388 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-71388 being exploited in the wild.

**How severe is CVE-2025-71388?** Informational severity, with a CVSS score of 7.6, published 16 July 2026.

**Which products and versions are affected?** Stoatchat 20241213-1 to 20250210-1.

**Is there a fix for CVE-2025-71388?** A patch was published on 2025-02-10: Fixed in version 20250210-1 (0.8.2) Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2025-71388 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2025-71388?** Check whether you run Stoatchat at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An authorization bypass (CWE-639) exists in the webhook fetch endpoint of stoatchat (delta/Revolt). The root cause is an incorrect permission check in `crates/delta/src/routes/channels/webhook_fetch_all.rs`, where the system verified the `ViewChannel` permission instead of the required `ManageWebhooks` permission. A remote attacker with basic authenticated access to a channel can exploit this to retrieve all associated webhooks and their secret tokens. With these tokens, the attacker can send arbitrary messages to the channel via the webhook API, bypassing standard user permission constraints and impersonating legitimate integrations. The issue is fixed in version 20250210-1 (0.8.2).

## Affected products

- stoatchat stoatchat (delta/Revolt) 20241213-1 to 20250210-1

## Timeline

- 2025-02-10: patched: Fixed in version 20250210-1 (0.8.2)
- 2025-02-10: advisory: GitHub Security Advisory GHSA-8684-rvfj-v3jq published
- 2026-07-16: disclosed: NVD publication date

## References

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

## Related threats

- [stoatchat MFA brute force via insufficient rate limiting](https://junglewise.ai/threats/cve-2026-100678-stoatchat-before-0-15-5-fails-to-enforce-account-level-attempt)
- [stoatchat account enumeration in login endpoint](https://junglewise.ai/threats/cve-2026-100677-stoatchat-before-0-15-5-contains-an-account-enumeration)
- [stoatchat January media proxy SSRF via SVG image href](https://junglewise.ai/threats/cve-2026-100676-january-the-media-proxy-embed-service-of-stoatchat-stoatchat)
- [stoatchat username validation bypass via Unicode sanitization](https://junglewise.ai/threats/cve-2026-100674-stoatchat-before-0-15-5-fails-to-revalidate-usernames-after)
- [stoatchat SSRF via DNS blocklist bypass in January proxy](https://junglewise.ai/threats/cve-2026-63088-stoatchat-ssrf-via-dns-blocklist-bypass-in-january-proxy)