5.4Mittel
CVE-2026-58211NATS Server: `no_auth_user` pre-CONNECT fast path bypasses user connection restrictions
Beschreibung
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client could be registered as the configured no_auth_user through a parser path used when the first client operation was not CONNECT, bypassing user-level connection restrictions such as allowed_connection_types or proxy_required that normal authentication would apply. This issue is fixed in versions 2.14.3 and 2.12.12.
Schwachstellentyp (CWE):
CWE-863
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
| Hersteller | Produkt | Versionen | |
|---|---|---|---|
| linuxfoundation | nats-server | 2.12.0 – < 2.12.12 | |
| nats-io | nats-server | < 2.12.12, >= 2.14.0-RC.1, < 2.14.3 |
Referenzen und Patches
- https://github.com/nats-io/nats-server/security/advisories/GHSA-hmmp-q8cx-v964 MitigationVendor Advisory
CPE-Treffer (NVD) (2)
cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*≥ 2.12.0 < 2.12.12cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*≥ 2.14.0 < 2.14.3