VULNERABILITY INTELLIGENCE

CVE-2026-26013

CVSS score3.7 LOW
EPSS probability0.43%
CISA KEVNot currently listed
Published2026-02-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Weakness classification

  • CWE-918: Server-Side Request Forgery (SSRF)

Primary references