CVE-2026-41488

A flaw was found in langchain-openai. A remote attacker could exploit a Time-of-Check to Time-of-Use TOCTOU vulnerability, also known as a DNS rebinding vulnerability. This occurs because the urltosize helper, used for image token counting, validates URLs for Server-Side Request Forgery SSRF...

a-mailx (=0.1.0), a2a-client-handler (=0.1.0) +876 more potentially affected by CVE-2026-41488 via langchain-openai (>=0.0.1 <=1.1.12)

langchain-openai PYPI version =0.0.1, =0.1.0, =0.1.0, =0.1.0b0, =0.0.1, =4.8.2, =0.0.1a1, =0.1.3, =1.0.0rc1, =3.2.0, =0.1.0, =0.1.1, =0.0.1a0, =2.1.7, =2.1.8 and more Source cves: CVE-2026-41488 Source advisory: OSV:PYSEC-2026-76...

PYSEC-2026-76

LangChain is a framework for building agents and LLM-powered applications. Prior to 1.1.14, langchain-openai's urltosize helper used by getnumtokensfrommessages for image token counting validated URLs for SSRF protection and then fetched them in a separate network operation with independent DNS...

CVE-2026-41488 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 urltosize helper used by getnumtokensfrommessages for image token counting validated URLs for SSRF protection and then fetched them in a separate network operation with independent DNS...

CVE-2026-41488 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 urltosize helper used by getnumtokensfrommessages for image token counting validated URLs for SSRF protection and then fetched them in a separate network operation with independent DNS...

CVE-2026-41488

CVE-2026-41488 affects the langchain-openai component prior to version 1.1.14. The issue stems from the _url_to_size() helper (used by get_num_tokens_from_messages for image token counting): it validates URLs to provide SSRF protection, then fetches them in a separate network operation with an in...

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 image token counting urltosize function. An attacker can access internal network resources by exploiting a DNS...

a-mailx (=0.1.0), a2a-client-handler (=0.1.0) +876 more potentially affected by CVE-2026-41488 via langchain-openai (>=0.0.1 <=1.1.12)

langchain-openai PYPI version =0.0.1, =0.1.0, =0.1.0, =0.1.0b0, =0.0.1, =4.8.2, =0.0.1a1, =0.1.3, =1.0.0rc1, =3.2.0, =0.1.0, =0.1.1, =0.0.1a0, =2.1.7, =2.1.8 and more Source cves: CVE-2026-41488 Source advisory: OSV:GHSA-R7W7-9XR2-QQ2R...

agent-builder (>=0.0.2 <=0.1.7), agentmanager (>=0.1.0 <=0.1.1) +47 more potentially affected by CVE-2026-41488 via langchain-openai (>=1.0.0 <=1.1.12)

langchain-openai PYPI version =1.0.0, =0.0.2, =0.1.0, =3.0.3, =0.0.48, =0.0.54, =0.1.2, =0.1.0, =0.1.0, =0.1.17rc1, =0.1.22 and more Source cves: CVE-2026-41488 Source advisory: SNYK:PYTHON-LANGCHAINOPENAI-16097112...

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,...

agent-builder (>=0.0.2 <=0.1.7), agent-memory-layer (>=0.1.0 <=0.1.1) +62 more potentially affected by CVE-2026-26013 via langchain-openai (>=1.0.0 <=1.1.7)

langchain-openai PYPI version =1.0.0, =0.0.2, =0.1.0, =0.1.0, =0.1.0, =3.0.3, =0.0.48, =0.0.54, =0.1.2, =0.1.0, =0.1.0, =0.9.0 and more Source cves: CVE-2026-26013 Source advisory: SNYK:PYTHON-LANGCHAINOPENAI-15263095...