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GHSA-jmfc-hfjq-pxcp

CriticalCVSS 9.1 / 10

Published May 29, 2026·Last modified May 29, 2026

Affected Components(1)

stigmem-node

0.9.0a1

Description

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:

pip install --upgrade --pre stigmem-node

If 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

Risk Scores

Base Score

9.1

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence

6.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS

N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit

Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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Critical severity

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