Description
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
Published: 2024-02-24
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2024-0652 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
Github GHSA Github GHSA GHSA-h9j7-5xvc-qhg5 langchain Server-Side Request Forgery vulnerability
History

Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00054}

 epss

{'score': 0.00073}

Tue, 25 Feb 2025 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Langchain
Langchain langchain
CPEs cpe:2.3:a:langchain:langchain:*:*:*:*:*:*:*:*
Vendors & Products Langchain
Langchain langchain
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Thu, 13 Feb 2025 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Langchain-ai
Langchain-ai langchain-ai\/langchain
CPEs cpe:2.3:a:langchain-ai:langchain-ai\/langchain:*:*:*:*:*:*:*:*
Vendors & Products Langchain-ai
Langchain-ai langchain-ai\/langchain
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Subscriptions

Langchain Langchain
Langchain-ai Langchain-ai\/langchain
cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published:

Updated: 2025-04-22T16:14:26.674Z

Reserved: 2024-01-04T21:47:13.281Z

Link: CVE-2024-0243

cve-icon Vulnrichment

Updated: 2024-08-01T17:41:16.443Z

cve-icon NVD

Status : Analyzed

Published: 2024-02-26T16:27:49.670

Modified: 2025-02-25T22:56:19.323

Link: CVE-2024-0243

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses