| Package | Affected versions | Patched versions |
|---|---|---|
| langchain | < 0.1.0 | 0.1.0 |
| langchain-exa | < 0.1.0 | 0.1.0 |
| langchain | < 0.1.0 | 0.1.0 |
With the following crawler configuration:
from bs4 import BeautifulSoup as Soup
url = "https://example.com"
loader = RecursiveUrlLoader(
url=url, max_depth=2, extractor=lambda x: Soup(x, "html.parser").text
)
docs = loader.load()
An attacker in control of the contents of https://example.com could place a malicious HTML file in there with links like "https://example.completely.different/my_file.html" and the crawler would proceed to download that file as well even though prevent_outside=True.
Resolved in https://github.com/langchain-ai/langchain/pull/15559
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