CVE-2026-26013

Name: CVE-2026-26013
Creator: NVD / NIST
Published: 2026-02-10T22:17:00.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.7/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-26013 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

3.7/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

0.38%

29.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Langchain	Langchain Core	< 1.2.11

References

https://github.com/langchain-ai/langchain/commit/2b4b1dc29a833d4053deba4c2b77a3848c834565Patch
https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.11Product, Release Notes
https://github.com/langchain-ai/langchain/security/advisories/GHSA-2g6r-c272-w58rMitigation, Vendor Advisory

Timeline

Published: Feb 10, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-26013?

How severe is CVE-2026-26013?

CVE-2026-26013 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-26013?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-26013?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST