LangChain is a framework for building agents and LLM-powered applications. Prior to langchain-text-splitters 1.1.2, HTMLHeaderTextSplitter.split_text_from_url() validated the initial URL using validate_safe_url() but then performed the fetch with requests.get() with redirects enabled (the default). Because redirect targets were not revalidated, a URL pointing to an attacker-controlled server could redirect to internal, localhost, or cloud metadata endpoints, bypassing SSRF protections. The response body is parsed and returned as Document objects to the calling application code. Whether this constitutes a data exfiltration path depends on the application: if it exposes Document contents (or derivatives) back to the requester who supplied the URL, sensitive data from internal endpoints could be leaked. Applications that store or process Documents internally without returning raw content to the requester are not directly exposed to data exfiltration through this issue. This vulnerability is fixed in 1.1.2.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - LangChain is a framework for building agents and LLM-powered applications. Prior to langchain-text-
    splitters 1.1.2, HTMLHeaderTextSplitter.split_text_from_url() validated the initial URL using
    validate_safe_url() but then performed the fetch with requests.get() with redirects enabled (the default).
    Because redirect targets were not revalidated, a URL pointing to an attacker-controlled server could
    redirect to internal, localhost, or cloud metadata endpoints, bypassing SSRF protections. The response
    body is parsed and returned as Document objects to the calling application code. Whether this constitutes
    a data exfiltration path depends on the application: if it exposes Document contents (or derivatives) back
    to the requester who supplied the URL, sensitive data from internal endpoints could be leaked.
    Applications that store or process Documents internally without returning raw content to the requester are
    not directly exposed to data exfiltration through this issue. This vulnerability is fixed in 1.1.2.
    (CVE-2026-41481)

ID	Name	Product	Family	Type	Severity
472224	Echo: langchain-text-splitters: security update to 1.1.2	Tenable Cloud Security	Echo Local Security Checks	Local	medium
472224	Echo: langchain-text-splitters: security update to 1.1.2	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
440917	SCA: security update for langchain-text-splitters (GHSA-fv5p-p927-qmxr)	Tenable Cloud Security	SCA Checks	Local	medium
440917	SCA: security update for langchain-text-splitters (GHSA-fv5p-p927-qmxr)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-41481

medium

Tenable Plugins

medium

medium

medium

medium