---
title: "GHSA-jmfc-hfjq-pxcp: stigmem-node's federation insecure transport settings may allow non-loopback cleartext federation"
url: https://erroneo.us/security/ghsa/GHSA-jmfc-hfjq-pxcp/
description: "GHSA-jmfc-hfjq-pxcp (critical, PyPI): stigmem-node's federation insecure transport settings may allow non-loopback cleartext federation. Impact Stigmem…"
type: advisory
section: "Security Digest"
date_published: 2026-05-29
date_modified: 2026-05-29
publisher: erroneo.us
author: erroneo.us Security Desk
ghsa: "GHSA-jmfc-hfjq-pxcp"
license: All rights reserved. Quote with attribution and a link.
---

# GHSA-jmfc-hfjq-pxcp: stigmem-node's federation insecure transport settings may allow non-loopback cleartext federation

## Affected packages

- PyPI `stigmem-node` < 0.9.0a2 → fixed: 0.9.0a2

## Details

Impact Stigmem nodes with federation enabled could be configured to run without mTLS outside loopback-only local development. In affected deployments, federation traffic may traverse the network without the intended transport protection. Impacted users are operators who enabled federation and explicitly disabled mTLS while binding the node to a non-loopback URL. Patches Patched in 0.9.0a2. The node now refuses this configuration unless insecure federation is limited to loopback-only local development. Workarounds Before upgrading, operators should enable mTLS for federation or ensure federation endpoints are bound only to loopback/private test environments and are not reachable by untrusted networks. Upgrade Upgrade to the patched release: If developers install through the Stigmem meta-package instead, they should use the matching extra for deployments, for example: Resources - Release: https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2 - Changelog: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35 - Security policy and posture: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md

## Sources

- [GitHub Advisory GHSA-jmfc-hfjq-pxcp](https://github.com/advisories/GHSA-jmfc-hfjq-pxcp)
- [github.com](https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-jmfc-hfjq-pxcp)

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Source page: https://erroneo.us/security/ghsa/GHSA-jmfc-hfjq-pxcp/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt