Unrated severityNVD Advisory· Published Jul 16, 2026· Updated Jul 16, 2026
stoatchat < 0.14.0 SSRF via DNS-based IP Blocklist Bypass
CVE-2026-63088
Description
stoatchat before 0.14.0 contains a server-side request forgery (SSRF) vulnerability that allows unauthenticated network-accessible attackers to bypass the DNS-based IP blocklist by exploiting incomplete address validation in the url_is_blacklisted function, which inspects only the first resolved address while the underlying HTTP client iterates all cached addresses.
Affected products
1Patches
Vulnerability mechanics
References
4- github.com/stoatchat/stoatchat/releases/tag/v0.14.0mitrerelease-notespatch
- github.com/stoatchat/stoatchat/security/advisories/GHSA-4mcc-p83c-r77qmitrevendor-advisory
- www.vulncheck.com/advisories/stoatchat-ssrf-via-dns-based-ip-blocklist-bypassmitrethird-party-advisory
- github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5mitre
News mentions
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