# CVE-2026-9198: Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation

> CVE-2026-9198: Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2026-9198
Last updated: 2026-10-24T20:10:00Z

- Published: 2026-07-17 17:36 UTC · Updated: 2026-10-24 20:10 UTC · Assigner: ibm
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 28.7%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2026-08-04, federal due date 2026-08-07, ransomware use: Unknown
- CWE: CWE-94

## 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

## CISA 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.

## Affected vendors and products

- IBM: Langflow OSS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-9198)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-9198)
- [https://www.ibm.com/support/pages/node/7278927](https://www.ibm.com/support/pages/node/7278927)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-9198 · Markdown: https://rewindex.com/cve/CVE-2026-9198.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-9198 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:47.652Z