stigmem-node's federation peer registration lacked explicit out-of-band approval
Impact
Federation peer registration accepted peer key material during registration without a separate administrator approval step based on an out-of-band fingerprint check. Impacted deployments are nodes that accept federation peer registration across a network where initial registration could be intercepted or misdirected.
Patches
Patched in 0.9.0a2. Peer registration now uses a pending approval flow, and peer tokens are not accepted until an administrator approves the peer using the expected fingerprint.
Workarounds
Before upgrading, restrict peer registration endpoints to trusted administrative networks and verify peer public-key fingerprints out of band before allowing federation traffic.
Upgrade
Upgrade to the patched release:
pip install --upgrade --pre stigmem-nodeIf developers install through the Stigmem meta-package instead, they should use the matching extra for deployments, for example:
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
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | stigmem-node | < 0.9.0a2 | 0.9.0a2 |
References
- https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-9vp8-3hmv-8fgh
- https://github.com/eidetic-labs/stigmem
- https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35
- https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md
- https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2
- CVSS vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-295, CWE-345- Platform
- Python (PyPI)
- Package
stigmem-node- Disclosed
- 29.05.2026
- Updated
- 11.10.2026 14:19
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9vp8-3hmv-8fgh - CC BY 4.0
Vulnerability history: stigmem-node
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 05.2026 08.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 3
- High 6
- Medium 1
Disclosures per year
- 2026: 10
-
stigmem-node's federation peer registration lacked explicit out-of-band approval this entry
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