Nixpkgs security tracker

Published

Permalink CVE-2026-41488

3.1 LOW

CVSS version: 3.1
Attack vector (AV): NETWORK
Attack complexity (AC): HIGH
Privileges required (PR): NONE
User interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality impact (C): LOW
Integrity impact (I): NONE
Availability impact (A): NONE

updated 3 hours ago by @LeSuisse Activity log

Created automatic suggestion 2 days, 8 hours ago
@LeSuisse accepted 3 hours ago
@LeSuisse published on GitHub 3 hours ago

angchain-openai: Image token counting SSRF protection can be bypassed via DNS rebinding

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.