CVE-2026-7524Network attack vector

Unauthenticated code execution via archive symlink traversal

Published May 27, 2026 · Updated May 27, 2026

Path traversal in IBM Langflow OSS 1.0.0 through 1.9.1 allows remote attackers to execute code via a crafted tar archive. The _unpack_bundle function follows archive symlinks and processes referenced host files into the vector database. Exploitation requires user-controlled file processing through an affected BaseFileComponent; exposed JWT secrets enable token forgery and Python Interpreter execution.

CVSS severity9.8
Critical
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in IBM Langflow OSS 1.0.0 through 1.9.1 allows remote attackers to execute code via a crafted tar archive. The _unpack_bundle function follows archive symlinks and processes referenced host files into the vector database. Exploitation requires user-controlled file processing through an affected BaseFileComponent; exposed JWT secrets enable token forgery and Python Interpreter execution.

The record

CVE
CVE-2026-7524
Published
May 27, 2026
Updated
May 27, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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 <=1.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=1.0.0 <=1.9.1

Published CVSS scores

9.8IBMCVSS:3.1/AV:N/AC:L/PR:N/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.

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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