CVE-2026-9201Public exploitNetwork attack vectorHinoki check available

Authenticated code execution via colliding template hashes

Published Aug 5, 2026 · Updated Aug 5, 2026

Code execution in IBM Langflow OSS 1.0.0 through 1.10.3 allows remote authenticated users to run Python through custom-component endpoints. The restricted-component gate compares only 48 bits of each SHA-256 digest, then compiles and executes submitted bytes after a colliding trusted-template hash passes. Any authenticated role can reach the affected endpoints when custom components are disabled, or a non-admin can do so under admin-only mode; injected Python runs with the Langflow process privileges.

CVSS severity8.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code execution in IBM Langflow OSS 1.0.0 through 1.10.3 allows remote authenticated users to run Python through custom-component endpoints. The restricted-component gate compares only 48 bits of each SHA-256 digest, then compiles and executes submitted bytes after a colliding trusted-template hash passes. Any authenticated role can reach the affected endpoints when custom components are disabled, or a non-admin can do so under admin-only mode; injected Python runs with the Langflow process privileges.

The record

CVE
CVE-2026-9201
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
IBM
Product
Langflow OSS
Classifications
CWE-326, T1190, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 <=1.10.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Langflow OSSversion=1.0.0 <=1.10.3

Published CVSS scores

8.8IBM CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 exploitPublished

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
T1190Exploit Public-Facing Application
T1059.006Python

Public exploit references

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Technologies

Your stack

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Your stack

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