How to fix CVE-2026-0769?

Within 24 hours: Identify all Langflow installations in your environment and assess exposure to untrusted networks. Immediately disable the eval_custom_component_code function if business operations permit, or restrict network access to Langflow instances to trusted networks only. Within 7 days: Implement WAF rules to block suspicious eval injection payloads, conduct threat hunting for indicators of compromise, and establish daily monitoring for vendor patch releases. Within 30 days: Deploy compensating controls such as running Langflow in isolated containers with minimal privileges, implement strict input validation, and prepare an emergency patching plan for when a vendor fix becomes available.

Is Python affected by CVE-2026-0769?

A critical remote code execution vulnerability (CVE-2026-0769) in Langflow allows unauthenticated attackers to execute arbitrary code with a 9.8 CVSS severity rating. Any organization running Langflow is at immediate risk of full system compromise, data theft, and operational disruption.

CVE-2026-0769

CRITICAL

2026-01-23 [email protected]

9.8

CVSS 3.0

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 23, 2026 - 04:16 nvd

CRITICAL 9.8

Description

Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of eval_custom_component_code function. The issue results from the lack of proper validation of a user-supplied string before using it to execute python code. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26972.

Analysis

Langflow has an eval injection in eval_custom_component_code (EPSS 2.0%) enabling remote code execution through crafted custom component definitions.

Remediation

Within 24 hours: Identify all Langflow installations in your environment and assess exposure to untrusted networks. Immediately disable the eval_custom_component_code function if business operations permit, or restrict network access to Langflow instances to trusted networks only. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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Get intelligence summaries, risk assessment, exploit details, threat intel, and remediation guidance.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +2.0

CVSS: +49

POC: 0

CVE-2026-0769 vulnerability details – vuln.today

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CVE-2026-0769

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CVE-2026-0769

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