CVE-2026-104316
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Authenticated Workflow Job Cancellation in IBM Langflow OSS

Vulnerability report for CVE-2026-104316, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-29

Last updated on: 2026-10-29

Assigner: IBM Corporation

Description

IBM Langflow OSS 1.0.0 through 1.12.3 could allow an authenticated attacker to cancel any victim's running background workflow job by sending a single HTTP request, resulting in loss of in-progress compute work with no flow-level permission check.

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Meta Information

Published
2026-10-29
Last Modified
2026-10-29
Generated
2026-10-29
AI Q&A
2026-10-29
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
IBM Langflow OSS 1.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-285 The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability in IBM Langflow OSS 1.0.0 through 1.12.3 allows an authenticated attacker to cancel any victim's running background workflow job by sending a single HTTP request. It does not require permission checks at the flow level, meaning any authenticated user can disrupt ongoing compute work.

Impact Analysis

This vulnerability can cause loss of in-progress compute work for any user running background workflows. It may lead to wasted resources, delays in project completion, and potential data processing interruptions without requiring high privileges.

Mitigation Strategies

Update IBM Langflow OSS to a version beyond 1.12.3 to address the vulnerability. Ensure proper authentication and authorization checks are enforced for workflow operations.

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