Server Side Template Injection Vulnerability in Langchaingo by TMC

CVE-2025-9556

What is CVE-2025-9556?

A server side template injection vulnerability in Langchaingo allows attackers to exploit the jinja2 syntax during prompt parsing. This is facilitated by the gonja library, specifically version 1.5.3, which permits the use of include and extend syntax to access files on the server. Through crafted inputs, attackers could manipulate prompts to read sensitive files such as 'etc/passwd', potentially exposing critical system information.

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