CVE-2026-18729

Analyzed Analyzed - Analysis Complete

Remote Code Execution in IBM Langflow OSS

Publication date: 2026-08-28

Last updated on: 2026-09-01

Assigner: IBM Corporation

Description

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-28

Last Modified

2026-09-01

Generated

2026-09-18

AI Q&A

2026-08-29

EPSS Evaluated

2026-09-15

NVD

CVE-2026-18729

EUVD

EUVD-2026-67952

Affected Vendors & Products

Vendor	Product	Version / Range
langflow	langflow	From 1.0.0 (inc) to 1.11.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-94	The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Attack-Flow Graph

Executive Summary

This vulnerability in IBM Langflow OSS versions 1.0.0 through 1.11.1 allows a remote authenticated attacker to execute arbitrary code. This is due to improper control during code generation, which could let an attacker run malicious commands on the affected system.

Detection Guidance

Detection of CVE-2026-18729 requires checking for IBM Langflow OSS versions 1.0.0 through 1.11.1. Use commands like 'pip show langflow' or 'docker inspect <container_name>' to verify installed versions. Monitor logs for unusual code execution patterns or unauthorized remote access attempts.

Impact Analysis

If exploited, this vulnerability could allow attackers to take control of the system, steal data, install malware, or disrupt operations. Since it requires authentication, attackers would need valid credentials to exploit it.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR and HIPAA requirements for data protection. Organizations may face legal penalties, reputational damage, and loss of compliance certifications if exploited.

Mitigation Strategies

Update IBM Langflow OSS to a version beyond 1.11.1 to address the arbitrary code execution flaw. Ensure only trusted users have authentication access to prevent remote exploitation.

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