CVE-2026-67545

Public workflows could reach internal HTTP services

Heym · Heym HTTP workflow node

First documented disclosure · Review checkpoint

Summary

The HTTP node made outbound requests without checking the target network. An anonymous caller could trigger a request from inside the deployment’s network.

Severity and exploitation evidence

High · 7.4/10 · CVSS 3.1. Severity source.

Exploitation not established: The reviewed advisory does not report malicious exploitation.

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

The HTTP node made outbound requests without checking the target network.

Conditions required

A workflow author had configured an internal target and exposed that workflow for anonymous execution.

Potential impact

An anonymous caller could trigger a request from inside the deployment’s network.

Affected versions and configurations

Before 0.0.73. The maintainer lists the boundary version in both its affected and patched fields. The CNA excludes the patched build.

Fix and mitigation status

0.0.73.

Practical next steps

Upgrade, restrict worker egress and review workflows available for anonymous execution.

Operating lesson

Apply authorization and isolation to every backend path that can act on behalf of an agent.

Evidence and limits

The public disclosure was on 2026-07-19. The CVE record was published on 2026-11-11.

Sources