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GHSA-fp6w-8wpg-74g5

CriticalCVSS 9.2 / 10

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

Affected Components(1)

stigmem-node

0.9.0a1

Description

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:

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:

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

9.2

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

7.2

Exploitation activity has been observed. Apply available patches or mitigations urgently.

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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