{"id":"CVE-2026-82234","state":"PUBLISHED","title":"SiYuan before v3.8.1 SSRF via DNS-Rebinding TOCTOU","description":"SiYuan versions before v3.8.1 contain a server-side request forgery vulnerability in the http_request and web_fetch agent tools that perform DNS resolution only at guard time without validating the connect-time resolution. 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