GHSA-fp6w-8wpg-74g5: stigmem-node Auth-disabled Deployments May Grant Broad Vulnerability

CRITICAL
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CWE-862 CWE-285
Published
Advisory Summary

GHSA-fp6w-8wpg-74g5 is a CRITICAL auth-disabled deployments may grant broad vulnerability (CWE-862: Missing Authorization) affecting stigmem-node libraries in the PyPI ecosystem. The issue involves auth-disabled deployments may grant broad anonymous access outside loopback. Remediation is available by upgrading affected packages to version 0.9.0a2.

GHSA-fp6w-8wpg-74g5 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-fp6w-8wpg-74g5
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-862: Missing Authorization
Affected Product stigmem-node
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-fp6w-8wpg-74g5

To remediate this vulnerability, upgrade all affected stigmem-node dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

stigmem-node fixed: 0.9.0a2 
pip install stigmem-node>=0.9.0a2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show stigmem-node

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-fp6w-8wpg-74g5, inspect your installed packages using pip:

pip show stigmem-node

Analyze the terminal output to locate any version of stigmem-node in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.0a2), your application is affected.

Note: The pip show stigmem-node command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In stigmem-node, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact Stigmem nodes configured with authentication disabled could grant the anonymous identity broad read/write/federation capabilities if exposed outside a loopback-only local development environment. Impacted users are operators who intentionally disabled authentication while binding the node to a non-loopback URL. ### Patches Patched in 0.9.0a2. The node now refuses unauthenticated operation outside loopback-only local development. ### Workarounds Before upgrading, keep authentication enabled for all non-local deployments and do not expose nodes with authentication disabled to untrusted networks. ### Upgrade Upgrade to the patched release: ```bash pip install --upgrade --pre stigmem-node ``` If developers install through the Stigmem meta-package instead, they should use the matching extra for their deployments, for example: ```bash pip install --upgrade --pre 'stigmem[node]' ``` ### 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

GHSA-fp6w-8wpg-74g5 Affected stigmem-node Versions

1 component(s)
Fixed Versions:
0.9.0a2
Product / Package Ecosystem Affected Versions Fixed Version
stigmem-node
pypi/stigmem-node
PyPI
< 0.9.0a2
0.9.0a2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-fp6w-8wpg-74g5
stigmem-node Source Repository REPOSITORY
https://github.com/eidetic-labs/stigmem
stigmem-node Source Repository REPOSITORY
https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35
stigmem-node Source Repository REPOSITORY
https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md
stigmem-node Release RELEASE
https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2

Frequently Asked Questions

What is GHSA-fp6w-8wpg-74g5?
GHSA-fp6w-8wpg-74g5 is a security vulnerability in stigmem-node involving Auth-disabled deployments may grant broad anonymous access outside loopback under CWE-862: Missing Authorization.
Which stigmem-node versions are affected?
Affected versions include releases prior to 0.9.0a2 across affected packages: stigmem-node.
What version fixes GHSA-fp6w-8wpg-74g5?
Upgrading to 0.9.0a2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is stigmem-node affected?
Yes, stigmem-node is affected in releases prior to 0.9.0a2. Upgrade your dependency to 0.9.0a2 or later.
What CWE is associated with GHSA-fp6w-8wpg-74g5?
GHSA-fp6w-8wpg-74g5 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check PyPI dependencies for GHSA-fp6w-8wpg-74g5?
Run the dependency tree command: 'pip show stigmem-node'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-fp6w-8wpg-74g5",
  "modified" : "2026-05-29T22:13:47Z",
  "published" : "2026-05-29T22:13:47Z",
  "aliases" : [ ],
  "summary" : "stigmem-node: Auth-disabled deployments may grant broad anonymous access outside loopback",
  "details" : "### Impact\nStigmem nodes configured with authentication disabled could grant the anonymous identity broad read/write/federation capabilities if exposed outside a loopback-only local development environment. Impacted users are operators who intentionally disabled authentication while binding the node to a non-loopback URL.\n\n### Patches\nPatched in 0.9.0a2. The node now refuses unauthenticated operation outside loopback-only local development.\n\n### Workarounds\nBefore upgrading, keep authentication enabled for all non-local deployments and do not expose nodes with authentication disabled to untrusted networks.\n\n### Upgrade\nUpgrade to the patched release:\n\n```bash\npip install --upgrade --pre stigmem-node\n```\n\nIf developers install through the Stigmem meta-package instead, they should use the matching extra for their deployments, for example:\n\n```bash\npip install --upgrade --pre 'stigmem[node]'\n```\n\n### Resources\n- Release: https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2\n- Changelog: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35\n- Security policy and posture: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "stigmem-node"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.0a2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-fp6w-8wpg-74g5"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eidetic-labs/stigmem"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-862" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-29T22:13:47Z",
    "nvd_published_at" : null
  }
}