pysec-2024-235
Vulnerability from pysec
Published
2024-02-26 16:27
Modified
2025-02-26 02:48
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details

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

Impacted products
Name purl
langchain-exa pkg:pypi/langchain-exa
Aliases


To clipboard 

{
   affected: [
      {
         package: {
            ecosystem: "PyPI",
            name: "langchain-exa",
            purl: "pkg:pypi/langchain-exa",
         },
         ranges: [
            {
               events: [
                  {
                     introduced: "0",
                  },
                  {
                     fixed: "bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22",
                  },
                  {
                     fixed: "bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22",
                  },
               ],
               repo: "https://github.com/langchain-ai/langchain",
               type: "GIT",
            },
            {
               events: [
                  {
                     introduced: "0",
                  },
                  {
                     fixed: "0.1.0",
                  },
               ],
               type: "ECOSYSTEM",
            },
         ],
         versions: [
            "0.0.1",
         ],
      },
   ],
   aliases: [
      "CVE-2024-0243",
   ],
   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: "PYSEC-2024-235",
   modified: "2025-02-26T02:48:56.937312+00:00",
   published: "2024-02-26T16:27:49+00:00",
   references: [
      {
         type: "EVIDENCE",
         url: "https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861",
      },
      {
         type: "FIX",
         url: "https://github.com/langchain-ai/langchain/commit/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22",
      },
      {
         type: "FIX",
         url: "https://github.com/langchain-ai/langchain/pull/15559",
      },
      {
         type: "REPORT",
         url: "https://github.com/langchain-ai/langchain/pull/15559",
      },
      {
         type: "REPORT",
         url: "https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861",
      },
      {
         type: "WEB",
         url: "https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861",
      },
   ],
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
}


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