CyberRota Analysis
AI-GeneratedVersions of SiYuan prior to 3.8.1 are vulnerable to a server-side request forgery (SSRF) flaw that allows attackers to exploit DNS resolution processes, enabling access to sensitive internal services and cloud instance metadata. This vulnerability can be leveraged through DNS rebinding techniques, effectively bypassing existing SSRF defenses. Organizations using affected versions should prioritize patching to mitigate potential unauthorized access to critical infrastructure.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD 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. 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.