Security Advisory

CVE-2026-26013

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-10 21:51:07

Last updated 2026-02-11 21:26:34

Assigner GitHub_M

State PUBLISHED

Description

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.

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