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Improper Control of Generation of Code ('Code Injection')

CVE-2025-9556

High
9.8/10

Summary

Langchaingo supports the use of jinja2 syntax when parsing prompts, which is in turn parsed using the gonja library v1.5.3. Gonja supports including and extends syntax to read files, which leads to a Server-Side Template Injection vulnerability within langchaingo, allowing an attacker to insert a statement into a prompt to read the "etc/passwd" file. This issue affects github.com/tmc/langchaingo versions prior to 0.1.14-pre.0.

  • LOW
  • NETWORK
  • HIGH
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-94 - Code Injection

Code injection is a type of vulnerability that allows an attacker to execute arbitrary code. This vulnerability fully compromises the machine and can cause a wide variety of security issues, such as unauthorized access to sensitive information, manipulation of data, denial of service attacks etc. Code injection is different from command injection in the fact that it is limited by the functionality of the injected language (e.g. PHP), as opposed to command injection, which leverages existing code to execute commands, usually within the context of a shell.

References

Advisory Timeline

  • Published