CVE-2026-9198Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
Updated under an hour ago ()
Does this affect you?
It affects IBM Langflow OSS and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Aug 4, 2026; federal agencies had to remediate by Aug 7, 2026. Treat that date as your deadline.
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Free account, 1 product
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
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Added to CISA KEV Aug 4, 2026; federal remediation due Aug 7, 2026Apply 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.
- EPSS (exploitation in the next 30 days)
- 28.66% (percentile 98)
- Assigned by
- ibm
- NVD analysis
- Analyzed
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
IBM Langflow OSS ibm:langflow_oss | from 1.0.0 through 1.10.0 | CNA record |
langflow langflow langflow:langflow | from 1.0.0 before 1.10.1 | NVD |
References
- https://www.ibm.com/support/pages/node/7278927vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-9198us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.