TI-2025-40258 Aliases CVE-2025-65106 GHSA-6qv9-48xg-fc7f

LangChain Vulnerable to Template Injection via Attribute Access in Prompt Templates

LOW 37CWE-1336Published 2025-11-21 · Updated 2025-11-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Code execution
Confidentiality · integrity · availability: High · Low · None
Fix status: Partial Red Hat: 4 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-1336.

Summary

LangChain is a framework for building agents and LLM-powered applications. From versions 0.3.79 and prior and 1.0.0 to 1.0.6, a template injection vulnerability exists in LangChain's prompt template system that allows attackers to access Python object internals through template syntax. This vulnerability affects applications that accept untrusted template strings (not just template variables) in ChatPromptTemplate and related prompt template classes. This issue has been patched in versions 0.3.80 and 1.0.7.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00524 44th percentileScored 2026-11-07

Fix Partial langchain (langchain-ai): 1.0.7, 0.3.80langchain-core (PyPI): 1.0.7, 0.3.80Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
langchain-ai	langchain	1.0.0 to before 1.0.7; before 0.3.80	1.0.7, 0.3.80	Patch available	CNA
—	langchain-core (PyPI)	1.0.0 to before 1.0.7	1.0.7	Patch available	GHSA-6qv9-48xg-fc7f
—	langchain-core (PyPI)	before 0.3.80	0.3.80	Patch available	GHSA-6qv9-48xg-fc7f

langchain Vendorlangchain-ai Affected 1.0.0 to before 1.0.7; before 0.3.80 Fixed in 1.0.7, 0.3.80 Patch available CNA
langchain-core (PyPI) Vendor— Affected 1.0.0 to before 1.0.7 Fixed in 1.0.7 Patch available GHSA-6qv9-48xg-fc7f
langchain-core (PyPI) Vendor— Affected before 0.3.80 Fixed in 0.3.80 Patch available GHSA-6qv9-48xg-fc7f

Remediation

Fix · CNA langchain (langchain-ai) Fixed in 1.0.7, 0.3.80
Fix · GHSA-6qv9-48xg-fc7f langchain-core (PyPI) Fixed in 1.0.7 Advisory →
Fix · GHSA-6qv9-48xg-fc7f langchain-core (PyPI) Fixed in 0.3.80 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

Product	Status	Plan or fix
OpenShift Lightspeed	Affected	No fix yet
Red Hat Ansible Automation Platform 2	Affected	No fix yet
Red Hat Enterprise Linux AI (RHEL AI)	Affected	No fix planned: Will not fix
Red Hat OpenShift AI (RHOAI)	Affected	No fix planned: Will not fix

Not affected: 2 products

Red Hat Ansible Automation Platform 2
Red Hat OpenShift AI (RHOAI)

Timeline

2026-10-02 Threatist record created from CVE-2025-65106
2026-10-03 Alias added: GHSA-6qv9-48xg-fc7f

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-65106

Other 4

TI-2024-31340 langchain_experimental (aka LangChain Experimental) 0.1.17 through 0.3.0 for LangChain… CVSS 3.1CRITICAL 9.8
TI-2023-20724 An issue in langchain langchain-ai v.0.0.232 and before allows a remote attacker to… CVSS 3.1CRITICAL 9.8
TI-2023-20706 An issue in LanChain-ai Langchain v.0.0.245 allows a remote attacker to execute arbitrary… CVSS 3.1CRITICAL 9.8
TI-2023-20166 An issue in Harrison Chase langchain v.0.0.194 and before allows a remote attacker to… CVSS 3.1CRITICAL 9.8
TI-2023-20136 An issue in LangChain v.0.0.231 allows a remote attacker to execute arbitrary code via the prompt parameter. CVSS 3.1CRITICAL 9.8
TI-2023-18185 An issue in langchain v.0.0.171 allows a remote attacker to execute arbitrary code via a… CVSS 3.1CRITICAL 9.8

See all 75 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences