CVE-2026-9198: IBM Langflow

What is CVE-2026-9198?

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

CVSS9.8 NVD 3.1

SeverityCRITICAL

Exploitation In the wild In CISA KEV

EPSS2% · P77

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWECWE-94

NVD published2026-07-17

NVD last modified2026-08-04

Timeline

2026-07-17Published to the U.S. National Vulnerability Database (NVD)
2026-08-04Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-08-04NVD record last updated
2026-08-07CISA federal remediation deadline (BOD 22-01)

CISA Known Exploited Vulnerability

IBM Langflow Code Injection Vulnerability

Added to KEV2026-08-04

Federal patch deadline2026-08-07

Known ransomware useUnknown

Affected product

IBM Langflow

Remediation Steps

Apply the vendor security update for IBM Langflow as a priority.
Restrict network exposure of the affected service to trusted sources until patched.
Review logs and detections for indicators of exploitation.
Confirm fixed versions against the official vendor advisory before deploying.

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 1 of August 2026 (August 3 – 9)

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🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.