CVE-2026-9198
Unauthenticated RCE via SUPERUSER token minting + exec() in IBM Langflow OSS.
Is CVE-2026-9198 being exploited?
Yes. CVE-2026-9198 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2026-9198?
CVE-2026-9198 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-9198?
Yes. A fix has been recorded for CVE-2026-9198. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-9198 affect?
CVE-2026-9198 affects IBM Langflow OSS 1.0.0 - 1.10.0, Default Langflow deployments exposing API endpoints. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-9198?
Isolate/block API, restrict network access, apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can mint SUPERUSER tokens and execute arbitrary code, achieving full remote code execution and system takeover.
Immediate action required
- affected>= 1.0.0 and <= 1.10.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.