CVEs-PoC/2024/CVE-2024-0243.md

CVE-2024-0243

Description

With the following crawler configuration:pythonfrom bs4 import BeautifulSoup as Soupurl = "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.https://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51Resolved in https://github.com/langchain-ai/langchain/pull/15559

POC

Reference

• https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861

Github

No PoCs found on GitHub currently.