| Package | Affected versions | Patched versions |
|---|---|---|
| langchain-core | < 0.1.35 | 0.1.35 |
| langchain | ≥ 0.1.4, ≤ 0.1.35 |
The XMLOutputParser in LangChain uses the etree module from the XML parser in the standard python library which has some XML vulnerabilities; see: https://docs.python.org/3/library/xml.html
This primarily affects users that combine an LLM (or agent) with the XMLOutputParser and expose the component via an endpoint on a web-service.
This would allow a malicious party to attempt to manipulate the LLM to produce a malicious payload for the parser that would compromise the availability of the service.
A successful attack is predicated on:
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