Remote Auth. AUC Exec via Auth Bypass in IBM Langflow v1.01.11.2
CVE-2026-19298 Published on September 4, 2026

Langflow is vulnerable to remote code execution due to authorization policy bypass in the authenticated flow-build endpoint
IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to execute arbitrary code due to an authorization bypass in the flow build process.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-19298 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Code Injection Vulnerability?

The software 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.

CVE-2026-19298 has been classified to as a Code Injection vulnerability or weakness.


Products Associated with CVE-2026-19298

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IBM Langflow Oss
 

Affected Versions

IBM Langflow OSS: