AI agent incident

CISA added an actively exploited Langflow remote code execution flaw to its KEV catalog

Reported · 2 sources · CVE-2026-9198

What happened

CISA added CVE-2026-9198, a code injection flaw in the Langflow agent-workflow tool carrying a CVSS score of 9.8, to its Known Exploited Vulnerabilities catalog after confirming active exploitation.

Why it matters

Confirmed exploitation in the wild of agent orchestration tooling means attackers already treat the workflow layer as a target worth the effort.

Sources

  1. CISA CISA Adds Three Known Exploited Vulnerabilities to Catalog
  2. The Hacker News CISA Flags Langflow RCE, Tomcat, and N-central Flaws as Actively Exploited

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Background reading

AIVSS, explained An explainer on the problem behind this incident.

In the tools directory

This page lists this record as a related incident, next to the products in the category and questions to ask their vendors.

Cite or correct this record

“CISA added an actively exploited Langflow remote code execution flaw to its KEV catalog.” The Permission Layer AI Agent Incident Database, https://thepermissionlayer.com/incidents/langflow-rce-actively-exploited/. Database updated October 22, 2026.

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