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Advisories

stoatchat < 0.14.0 SSRF via DNS-based IP Blocklist Bypass

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severity
high
date
Affecting

  • stoatchat < 0.14.0

CWE
  • CWE-918 Server-Side Request Forgery (SSRF)
CVSS
7.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Credit
George Chen
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.

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