Vulnerabilities CVE-2026-9198

CVE-2026-9198

Critical

Open

KEV

TLP:CLEAR

Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation

NVD CVE.org

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Description

IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments

Details

CVSS Score: 9.8
EPSS Score ⓘ: 17.35%

96.8th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence: 100%
Published: Jul 17, 2026
Last Modified: Aug 5, 2026
CISA KEV
Date Added: Aug 4, 2026
Patch Due: Aug 7, 2026
Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes

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