| Component | Langflow |
| Severity | critical (CVSS 9.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2026-07-17 |
| Last modified | 2026-08-17 |
| Affected versions | langflow >= 1.0.0, < 1.10.1 |
| Fixed in | 1.10.1 |
| Weakness | CWE-94 |
| CISA KEV | listed 2026-08-04 |
NVD 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.
What to do
- Upgrade Langflow to
1.10.1or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
- It is exploited in the wild: treat unpatched hosts as compromised, rotate the secrets they hold and review their logs.
Sources
- NVD: CVE-2026-9198
- https://www.ibm.com/support/pages/node/7278927
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-9198
Read more
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