CVE-2026-17626Network attack vectorHinoki check available

Authenticated host file access via unsafe Docker arguments

Published Aug 5, 2026 · Updated Aug 5, 2026

Incorrect privilege assignment in IBM Langflow OSS 1.0.0 through 1.10.3 allows remote authenticated users to access host files. The shared MCP stdio source policy incompletely rejects Docker volume-mount and device-mapping arguments, allowing a submitted server configuration to attach host paths or devices to an MCP container. Low-privileged Langflow access and a Docker-based MCP server are required; successful exploitation permits host-file reading, modification, or exposure.

CVSS severity8.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect privilege assignment in IBM Langflow OSS 1.0.0 through 1.10.3 allows remote authenticated users to access host files. The shared MCP stdio source policy incompletely rejects Docker volume-mount and device-mapping arguments, allowing a submitted server configuration to attach host paths or devices to an MCP container. Low-privileged Langflow access and a Docker-based MCP server are required; successful exploitation permits host-file reading, modification, or exposure.

The record

CVE
CVE-2026-17626
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
IBM
Product
Langflow OSS
Classifications
CWE-266, T1611
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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1611Escape to Host

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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