LangChain is a framework for building agents and LLM-powered applications. Prior to 1.2.11, the ChatOpenAI.get_num_tokens_from_messages() method fetches arbitrary image_url values without validation when computing token counts for vision-enabled models. This allows attackers to trigger Server-Side Request Forgery (SSRF) attacks by providing malicious image URLs in user input. This vulnerability is fixed in 1.2.11.

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 1.2.11, the
    ChatOpenAI.get_num_tokens_from_messages() method fetches arbitrary image_url values without validation
    when computing token counts for vision-enabled models. This allows attackers to trigger Server-Side
    Request Forgery (SSRF) attacks by providing malicious image URLs in user input. This vulnerability is
    fixed in 1.2.11. (CVE-2026-26013)

ID	Name	Product	Family	Type	Severity
463922	Echo: langchain-core: security update to 1.2.11	Tenable Cloud Security	Echo Local Security Checks	Local	low
463922	Echo: langchain-core: security update to 1.2.11	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	low
437689	SCA: security update for langchain-core (GHSA-2g6r-c272-w58r)	Tenable Cloud Security	SCA Checks	Local	low
437689	SCA: security update for langchain-core (GHSA-2g6r-c272-w58r)	Tenable Self-Hosted Container Security	SCA Checks	Local	low

Detections

Analytics

CVE-2026-26013

low

Tenable Plugins

low

low

low

low