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CRITICAL

CVE-2026-19295

CVSS v3

9.9

CRITICAL

EPSS Score

3.3 %

exploit probability, as of 2026-09-25

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-08-28
Last Modified
2026-08-28

Frequently asked questions

What is CVE-2026-19295?

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.

Is CVE-2026-19295 actively exploited?

Active exploitation of CVE-2026-19295 has not been confirmed. Its EPSS score was 3.3% on 2026-09-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-19295?

CVE-2026-19295 has a CVSS v3 base score of 9.9 (CRITICAL severity).

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