CVE-2025-71388

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).

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Weakness Type (CWE)

CWE-639 CWE-639

References

Other References

https://github.com/stoatchat/stoatchat/commit/e3723d647effb81ea3d3919d848faf64dbe89829 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

Frequently Asked Questions

What is CVE-2025-71388? +

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).

How do I check if I'm vulnerable to CVE-2025-71388? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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