CVE-2026-110245

Langflow authentication failure permits information disclosure

IBM / Langflow · Langflow OSS

First documented disclosure · Review checkpoint

Summary

Unauthorized disclosure of sensitive information.

Severity and exploitation evidence

High · 7.5/10 · CVSS 3.1. Severity source.

Exploitation not established: The reviewed primary records do not establish malicious exploitation or a confirmed victim.

Exploitation evidence source

Technical severity is not a measure of observed attacks or of risk to your deployment. Attempts, demonstrations, and successful compromise retain the qualifications in the source.

How the weakness works

Improper authentication allows access to sensitive information; the affected route and exact data are not published.

Conditions required

Network access to the affected route; IBM’s vector requires no login.

Potential impact

Unauthorized disclosure of sensitive information.

Affected versions and configurations

IBM lists Langflow OSS 1.0.0 through 1.12.4.

Fix and mitigation status

1.12.5 per IBM; this is an issue-specific fix, not assurance that the old release addresses later findings.

Practical next steps

Upgrade to a current supported release containing the fix; back up the deployment and validate workflow behavior. Where MCP stdio is used, IBM additionally requires interpreter hardening and administrator-only controls; configuration changes do not replace upgrading.

Operating lesson

Apply authentication to every data-returning endpoint, including auxiliary interfaces.

Evidence and limits

IBM bulletin 7293016 was initially published 2026-10-19; the CNA record followed on 2026-10-29. Earlier upstream patches are not assigned to this CVE by inference. Exact technical details absent from the public record remain unknown; a CVSS score is not an observed incident.

Sources