stigmem-node Insecure Federation Transport Configuration

published 2026-05-29 5 mo ago modified 2026-09-11 58 d ago also GHSA-jmfc-hfjq-pxcp , EUVD-2026-62408

cvss: 9.1; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

pypi stigmem-node 0.9.0a2
eidetic-labs stigmem 0.9.0a2

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 mo ago (2026-08-19)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	9.1	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
CNA	4.0	9.1	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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem	package	affected	fixed in
pypi	stigmem-node	<0.9.0a2	0.9.0a2

Affected products

eidetic-labs stigmem

Classification

Weakness

CWE-319 Cleartext Transmission of Sensitive Information
CWE-489 Active Debug Code

References

github.com /eidetic-labs/stigmem/security/advisories/GHSA-jmfc-hfjq-pxcp
vendor-advisory, web
vulncheck.com /advisories/stigmem-node-insecure-federation-transport-configuration
third-party-advisory
github.com /eidetic-labs/stigmem
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary