LOW 3.7 PyPI
langchain Server-Side Request Forgery vulnerability
GHSA-h9j7-5xvc-qhg5 · CVE-2024-0243 · PYSEC-2024-235
Published · Modified
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Description
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
References
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-0243
- WEB https://github.com/langchain-ai/langchain/pull/15559
- WEB https://github.com/langchain-ai/langchain/commit/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22
- PACKAGE https://github.com/langchain-ai/langchain
- WEB https://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51
- WEB https://github.com/pypa/advisory-database/tree/main/vulns/langchain-exa/PYSEC-2024-235.yaml
- WEB https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861
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