{"id":"CVE-2024-0243","aliases":["GHSA-h9j7-5xvc-qhg5","PYSEC-2024-235","PYSEC-2026-1509"],"title":"langchain Server-Side Request Forgery vulnerability","summary":"langchain Server-Side Request Forgery vulnerability","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N","vendor":"langchain","product":"langchain","ecosystem":"pip","affected":["langchain < 0.1.0"],"patched":["langchain 0.1.0"],"published":"2024-02-26","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-h9j7-5xvc-qhg5","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-0243"},{"url":"https://github.com/langchain-ai/langchain/pull/15559"},{"url":"https://github.com/langchain-ai/langchain/commit/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22"},{"url":"https://github.com/langchain-ai/langchain"},{"url":"https://github.com/langchain-ai/langchain/blob/bf0b3cc0b5ade1fb95a5b1b6fa260e99064c2e22/libs/community/langchain_community/document_loaders/recursive_url_loader.py#L51-L51"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/langchain-exa/PYSEC-2024-235.yaml"},{"url":"https://huntr.com/bounties/370904e7-10ac-40a4-a8d4-e2d16e1ca861"}],"tags":["osv","pip"],"epss":0.00517,"epssPercentile":0.42975,"ingestedAt":"2026-07-08T18:25:50.033Z","slug":"CVE-2024-0243","body":"## Overview\n\nWith 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\n\n## Affected packages\n\n- `langchain < 0.1.0`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `langchain 0.1.0`","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}