CVE-2026-41488: langchain-ai langchain-openai, SSRF

Описание

Оригинално описание

LangChain is a framework for building agents and LLM-powered applications. Prior to 1.1.14, langchain-openai's _url_to_size() helper (used by get_num_tokens_from_messages for image token counting) validated URLs for SSRF protection and then fetched them in a separate network operation with independent DNS resolution. This left a TOCTOU / DNS rebinding window: an attacker-controlled hostname could resolve to a public IP during validation and then to a private/localhost IP during the actual fetch.

Засегнати продукти

• langchain-ai langchain-openai: < 1.1.14

Вид слабост

• CWE-918 Server-Side Request Forgery

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-41488
• https://nvd.nist.gov/vuln/detail/CVE-2026-41488
• https://github.com/langchain-ai/langchain/security/advisories/GHSA-r7w7-9xr2-qq2r