CVE-2026-110200

Langflow cleartext storage can expose sensitive information

IBM / Langflow · Langflow OSS

First documented disclosure · Review checkpoint

Summary

Disclosure of sensitive stored information.

Severity and exploitation evidence

Medium · 6.5/10 · 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

Sensitive data is stored without the intended confidentiality protection; the storage location is not disclosed.

Conditions required

Remote authenticated access to the affected information path.

Potential impact

Disclosure of sensitive stored 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

Minimize secret retention and restrict access to stored workflow data.

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