---
cve: "CVE-2026-76242"
severity: "CRITICAL"
cvss: 9.1
epss: "0.3%"
vendor: "eidetic-labs"
kev: false
exploited: false
published: "2026-08-19 14:17:56"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T23:19:59+02:00"
---

# CVE-2026-76242

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step. On nodes that accept federation peer registration over a network where initial registration can be intercepted or misdirected, an attacker can register a malicious peer and gain access to or tamper with federation traffic. Fixed in 0.9.0a2, which introduces a pending approval flow requiring administrator fingerprint verification before peer tokens are accepted.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 18ec5dbe3a3970d804f2013b4ae53dd2da8ed4ac (Commit)

## Referenzen

- <https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-9vp8-3hmv-8fgh>
- <https://www.vulncheck.com/advisories/stigmem-federation-peer-registration-authentication-bypass>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-76242) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_