Vulnerability · Published Aug 19, 2026 · Assigned by VulnCheck

CVE-2026-76244stigmem-node Insecure Federation Transport Configuration

Critical 9.1

In plain English

A critical-severity security flaw in stigmem from eidetic-labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)9.1Critical

Exploit odds (30 days)0.3%top 81.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

stigmem-node contains an insecure default configuration vulnerability that allows federation traffic to traverse networks without mTLS protection when non-loopback endpoints are enabled. Operators who explicitly disabled mTLS while binding federation to non-loopback addresses expose federation traffic to cleartext interception and man-in-the-middle attacks.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	stigmem-node	0.9.0a2	GHSA-jmfc-hfjq-pxcp

Affected products (as reported)

Vendor	Product	Versions
eidetic-labs	stigmem	0 – before 0.9.0a2

Weakness: CWE-319 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

GitHub Security Advisory (GHSA-jmfc-hfjq-pxcp) vendor-advisory
VulnCheck Advisory: stigmem-node Insecure Federation Transport Configuration third-party-advisory