GHSA-H9J7-5XVC-QHG5

Vulnerability from github – Published: 2024-02-26 18:30 – Updated: 2025-02-26 22:10
VLAI
Summary
langchain Server-Side Request Forgery vulnerability
Details

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.

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
3.7 (Low)
CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langchain"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-0243"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-26T20:56:21Z",
    "nvd_published_at": "2024-02-26T16:27:49Z",
    "severity": "LOW"
  },
  "details": "With the following crawler configuration:\n\n```python\nfrom bs4 import BeautifulSoup as Soup\n\nurl = \"https://example.com\"\nloader = RecursiveUrlLoader(\n    url=url, max_depth=2, extractor=lambda x: Soup(x, \"html.parser\").text \n)\ndocs = loader.load()\n```\n\nAn 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`.\n\nhttps://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51\n\nResolved in https://github.com/langchain-ai/langchain/pull/15559",
  "id": "GHSA-h9j7-5xvc-qhg5",
  "modified": "2025-02-26T22:10:45Z",
  "published": "2024-02-26T18:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-0243"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/pull/15559"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/commit/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langchain-ai/langchain"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/langchain-exa/PYSEC-2024-235.yaml"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "langchain Server-Side Request Forgery vulnerability"
}



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