CVE-2026-0771Network attack vectorHinoki check available

Remote code execution via PythonFunction workflow injection

Published Jan 23, 2026 · Updated Jan 23, 2026

Code injection in Langflow OSS 1.4.2 allows remote authenticated users to execute arbitrary code through Python function workflows. The PythonFunction component accepts attacker-supplied custom Python in a workflow and executes it in the application process. Exploitation requires low privileges, user interaction, and a configuration that permits introduction of custom code; execution inherits the application's privileges.

CVSS severity7.1
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Code injection in Langflow OSS 1.4.2 allows remote authenticated users to execute arbitrary code through Python function workflows. The PythonFunction component accepts attacker-supplied custom Python in a workflow and executes it in the application process. Exploitation requires low privileges, user interaction, and a configuration that permits introduction of custom code; execution inherits the application's privileges.

The record

CVE
CVE-2026-0771
Published
Jan 23, 2026
Updated
Jan 23, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-94, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=1.4.2

Published CVSS scores

7.1Zero Day InitiativeCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.006Command and Scripting Interpreter: Python/Python Commands

Public exploit references

No public exploit references are available in this record.

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Technologies

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Your stack

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