CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2024-0243
High (8.1) in langchain langchain. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in langchain 0.1.0.
With the following crawler configuration:
```python
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`.
https://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51
Resolved in https://github.com/langchain-ai/langchain/pull/15559
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- langchain:langchain
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-h9j7-5xvc-qhg5 | PyPI | langchain | <0.1.0 | 0.1.0 |
| PYSEC-2024-235 | PyPI | langchain-exa | <0.1.0 | 0.1.0 |
| PYSEC-2026-1509 | PyPI | langchain | <0.1.0 | 0.1.0 |
References
- https://github.com/langchain-ai/langchain/commit/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22
- https://github.com/langchain-ai/langchain/pull/15559
- https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861
- https://github.com/langchain-ai/langchain/commit/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22
- https://github.com/langchain-ai/langchain/pull/15559