GHSA-2G6R-C272-W58R LangChain affected by SSRF via image_url token counting in ChatOpenAI.get_num_tokens_from_messages

Server-Side Request Forgery SSRF in ChatOpenAI Image Token Counting Summary The ChatOpenAI.getnumtokensfrommessages method fetches arbitrary imageurl values without validation when computing token counts for vision-enabled models. This allows attackers to trigger Server-Side Request Forgery SSRF...

Server-side Request Forgery (SSRF)

Overview langchain-openai is an An integration package connecting OpenAI and LangChain Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the ChatOpenAI.getnumtokensfrommessages function. An attacker can cause the server to make internal network requests,...

CVE-2026-26013

LangChain is a framework for building agents and LLM-powered applications. Prior to 1.2.11, the ChatOpenAI.getnumtokensfrommessages method fetches arbitrary imageurl values without validation when computing token counts for vision-enabled models. This allows attackers to trigger Server-Side Reque...