stigmem-node's federation peer token timestamp validation may reject valid peer tokens
Impact
A mismatch in federation peer-token timestamp handling could cause valid peer tokens to be treated as expired. Impacted deployments are Stigmem nodes using federation peer authentication paths from affected versions. The primary impact is availability and reliability of authenticated federation flows.
Patches
Patched in 0.9.0a2. Federation peer-token timestamp handling now uses the canonical millisecond-based validation path and is covered by regression tests.
Workarounds
Before upgrading, avoid mixed peer-token minting paths and restrict federation use to tightly controlled peers.
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-xh5j-xjfq-qvvx
- 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:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N- Weakness (CWE)
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-xh5j-xjfq-qvvx - 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 token timestamp validation may reject valid peer tokens this entry
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