---
id: CVE-2026-76244
title: >-
  stigmem-node contains an insecure default configuration vulnerability that
  allows federation traffic to traverse networks without mTLS protection when
  non-loopback endpoints are enabled
summary: >-
  stigmem-node contains an insecure default configuration vulnerability that
  allows federation traffic to traverse networks without mTLS protection when
  non-loopback endpoints are enabled. Operators who explicitly disabled mTLS
  while bindi…
severity: critical
cwe:
  - CWE-319
vendor: stigmem-node
product: stigmem-node
affected:
  - stigmem-node < 0.9.0a2
patched:
  - stigmem-node 0.9.0a2
published: '2026-08-19'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T18:28:15.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76244'
references:
  - url: >-
      https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-jmfc-hfjq-pxcp
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/stigmem-node-insecure-federation-transport-configuration
    label: disclosure@vulncheck.com
  - url: 'https://github.com/eidetic-labs/stigmem'
tags:
  - nvd
  - osv
  - pip
epss: 0.00216
epssPercentile: 0.12327
aliases:
  - GHSA-jmfc-hfjq-pxcp
ecosystem: pip
ingestedAt: '2026-08-20T19:23:06.412Z'
---

## Overview

stigmem-node contains an insecure default configuration vulnerability that allows federation traffic to traverse networks without mTLS protection when non-loopback endpoints are enabled. Operators who explicitly disabled mTLS while binding federation to non-loopback addresses expose federation traffic to cleartext interception and man-in-the-middle attacks.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-76244)

Affected packages:

- `stigmem-node < 0.9.0a2`

Patched in:

- `stigmem-node 0.9.0a2`

Source: https://osv.dev/vulnerability/GHSA-jmfc-hfjq-pxcp