CVE-2026-82234 - 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. Attackers can use DNS rebinding to answer the guard resolution with a public IP and the connect resolution with a private or metadata IP, bypassing the SSRF defense to access cloud instance metadata and internal services. - 漏洞详情

漏洞编号：CVE-2026-82234

风险等级：高危

漏洞来源：CVE

CVE 编号：CVE-2026-82234

CNNVD 编号：-

厂商/产品：- / -

影响范围：-

CWE：CWE-918

发布/更新时间：2026-08-28 / 2026-08-28

漏洞描述

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. Attackers can use DNS rebinding to answer the guard resolution with a public IP and the connect resolution with a private or metadata IP, bypassing the SSRF defense to access cloud instance metadata and internal services.

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