CVE-2026-10134Network attack vector

Unauthenticated code execution via public flow tool_code

Published Jun 30, 2026 · Updated Jun 30, 2026

Code injection in IBM Langflow OSS 1.0.0 through 1.9.3 allows remote attackers to execute Python code through a public flow build. The PythonCodeStructuredTool passes its attacker-controlled tool_code template field to exec() during flow building without validation or isolation. Unauthenticated reachability requires a legitimate user to publish a flow containing that tool; execution runs with Langflow process privileges and permits access to its secrets, database, files, and network.

CVSS severity10.0
Critical
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in IBM Langflow OSS 1.0.0 through 1.9.3 allows remote attackers to execute Python code through a public flow build. The PythonCodeStructuredTool passes its attacker-controlled tool_code template field to exec() during flow building without validation or isolation. Unauthenticated reachability requires a legitimate user to publish a flow containing that tool; execution runs with Langflow process privileges and permits access to its secrets, database, files, and network.

The record

CVE
CVE-2026-10134
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-94, T1059.006
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 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=1.0.0 <=1.9.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=1.0.0 <=1.9.3

Published CVSS scores

10.0IBM CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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