CVE-2026-19297 IBM CVE debrief

Who should care

Organizations using IBM Langflow OSS 1.0.0 through 1.9.6, security teams, and administrators responsible for patching and vulnerability management should prioritize remediation efforts to prevent potential unauthorized access to user accounts.

Technical summary

IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts. This vulnerability has a CVSS score of 9.1 and is classified as CRITICAL. Affected organizations should assess their deployments and apply patches or mitigations to prevent unauthorized access.

Defensive priority

Organizations using IBM Langflow OSS 1.0.0 through 1.9.6 should prioritize patching to prevent unauthorized access to user accounts.

Recommended defensive actions

• Inventory and verify if using IBM Langflow OSS 1.0.0 through 1.9.6
• Apply patches or updates provided by the vendor
• Monitor for suspicious authentication attempts
• Implement compensating controls, such as rate limiting or IP blocking
• Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record indicates that IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts. Evidence is limited, and further verification is needed to confirm affected scope and vendor remediation.

Official resources