CVE-2026-9225Network attack vector

Cross-user file disclosure via unchecked storage identifiers

Published Sep 10, 2026 · Updated Sep 10, 2026

Improper access control in IBM Langflow OSS 1.0.0 through 1.11.5 allows remote authenticated users to read other users' files. The File/Read File component accepts arbitrary user or flow identifiers from tweaks sent to /api/v1/run/advanced/{flow_id} and reads the referenced storage path without verifying ownership. Low-privileged access to a multi-user deployment is sufficient, and successful exploitation discloses files uploaded by another user.

CVSS severity6.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in IBM Langflow OSS 1.0.0 through 1.11.5 allows remote authenticated users to read other users' files. The File/Read File component accepts arbitrary user or flow identifiers from tweaks sent to /api/v1/run/advanced/{flow_id} and reads the referenced storage path without verifying ownership. Low-privileged access to a multi-user deployment is sufficient, and successful exploitation discloses files uploaded by another user.

The record

CVE
CVE-2026-9225
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
IBM
Product
Langflow OSS
Classifications
CWE-639, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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 <=1.11.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Langflow OSSversion=1.0.0 <=1.11.5

Published CVSS scores

6.5IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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-639Authorization Bypass Through User-Controlled Key
T1005Data from Local System

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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