Server-side Request Forgery In Recursive URL Loader (langchain-ai langchain-ai/langchain)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.52 % · percentile 44 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- @huntr_ai
- NVD status
- Analyzed
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
Weaknesses (CWE)
- CWE-918 — Server-Side Request Forgery
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | LOW 3.7 | CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N | @huntr_ai |
| CVSS 3.1 | HIGH 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | LOW 3.7 | CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N | NVD · security@huntr.dev (Secondary) |
Advisories
- GHSA-h9j7-5xvc-qhg5 — langchain Server-Side Request Forgery vulnerability
- PYSEC-2024-235 — With the following crawler configuration:
- PYSEC-2026-1509 — langchain Server-Side Request Forgery vulnerability
European references
- ENISA EUVD · EUVD-2024-0652
- GCVE · GCVE-0-2024-0243
CERT-FR advisories
- CERTFR-2025-AVI-0538 — Multiples vulnérabilités dans VMware Tanzu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:langchain:langchain:*:*:*:*:*:*:*:*< 0.1.0
Affected products
| Product | Versions |
|---|---|
| langchain-ai · langchain-ai/langchain | affected unspecified < 0.1.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |