CVE-2026-58211

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.

Score
CVSS 3.1 5.4 Medium
Status
Analyzed - security-advisories@github.com
Published
2026-07-08
Last modified
2026-10-25
Weaknesses
CWE-863

Affected products

References

 
 
© AVABIS GmbH privacypolicy about