CVE-2026-19295

Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

Published Aug 28, 2026 CVSS 3.1 · 9.9 Critical EPSS 1.6% KEV · Not listed
Description
IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Langflow
Langflow langflow
CPEs cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
Vendors & Products Langflow
Langflow langflow
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.
Title Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
First Time appeared Ibm
Ibm langflow Oss
Weaknesses CWE-95
CPEs cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:langflow_oss:1.11.1:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm langflow Oss
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Sep 1, 2026, 3:56 AM
Reserved
Aug 7, 2026, 4:56 PM
Status
Analyzed
Published
Aug 28, 2026, 10:16 PM
Modified
Sep 1, 2026, 4:18 AM