Vulnerability · Published Jun 6, 2024 · Assigned by @huntr_ai
CVE-2024-2965Denial-of-Service in LangChain SitemapLoader in langchain-ai/langchain
Medium 4.2
In plain English
A medium-severity security flaw in langchain-ai/langchain from langchain-ai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A Denial-of-Service (DoS) vulnerability exists in the `SitemapLoader` class of the `langchain-ai/langchain` repository, affecting all versions. The `parse_sitemap` method, responsible for parsing sitemaps and extracting URLs, lacks a mechanism to prevent infinite recursion when a sitemap URL refers to the current sitemap itself. This oversight allows for the possibility of an infinite loop, leading to a crash by exceeding the maximum recursion depth in Python. This vulnerability can be exploited to occupy server socket/port resources and crash the Python process, impacting the availability of services relying on this functionality.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | langchain | 0.2.5 | GHSA-3hjh-jh2h-vrg6 |
| PyPI | langchain | 0.2.5 | PYSEC-2024-118 |
| PyPI | langchain-community | 0.2.5 | GHSA-3hjh-jh2h-vrg6 |
| PyPI | langchain-community | 0.2.5 | PYSEC-2026-2561 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| langchain-ai | langchain-ai/langchain | unspecified – before 0.2.5 |
Weakness: CWE-674 · Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H