CVE-2026-0769

CRITICAL LAB

Langflow - Unauthenticated Remote Code Execution via eval_custom_component_code

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2026-0769. PoCs published by exploitintel.

AI-analyzed exploit summary The repository contains a functional exploit for CVE-2026-0769, a critical RCE vulnerability in Langflow due to improper neutralization of directives in dynamically evaluated code. The exploit leverages unauthenticated access via the auto_login endpoint and executes arbitrary code through the custom_component API.

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.

Exploits (1)

github WORKING POC 1 stars
by exploitintel · pythonpoc
https://github.com/exploitintel/eip-pocs-and-cves/tree/main/CVE-2026-0769

The repository contains a functional exploit for CVE-2026-0769, a critical RCE vulnerability in Langflow due to improper neutralization of directives in dynamically evaluated code. The exploit leverages unauthenticated access via the auto_login endpoint and executes arbitrary code through the custom_component API.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Langflow 1.0.0 through 1.8.0
No auth needed
Prerequisites: Network access to Langflow instance · Langflow instance with default AUTO_LOGIN=True configuration
devstral-2 · analyzed Mar 02, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory x_research-advisory
https://www.zerodayinitiative.com/advisories/ZDI-26-035/

Scores

CVSS v3 9.8
EPSS 0.0166
EPSS Percentile 82.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Lab Environment

EIP LAB Lab screenshot
vulnerable docker pull ghcr.io/exploitintel/cve-2026-0769-vulnerable:latest

Details

CWE
CWE-95
Status published
Products (1)
langflow/langflow 1.3.2
Published Jan 23, 2026
Tracked Since Feb 18, 2026