Headline
GHSA-q84m-rmw3-4382: LangChain's XMLOutputParser vulnerable to XML Entity Expansion
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:
- Usage of XMLOutputParser
- Passing of malicious input into the XMLOutputParser either directly or by trying to manipulate an LLM to do so on the users behalf
- Exposing the component via a web-service
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- GitHub Advisory Database
- GitHub Reviewed
- CVE-2024-1455
LangChain’s XMLOutputParser vulnerable to XML Entity Expansion
Moderate severity GitHub Reviewed Published Mar 26, 2024 to the GitHub Advisory Database • Updated Mar 26, 2024
Package
pip langchain-core (pip)
Affected versions
< 0.1.34
Description
Published to the GitHub Advisory Database
Mar 26, 2024
Last updated
Mar 26, 2024