Bug 2498258 (CVE-2026-58211) - CVE-2026-58211 nats-server: NATS Server: Authentication bypass allows unauthorized access and information disclosure
Summary: CVE-2026-58211 nats-server: NATS Server: Authentication bypass allows unautho...
Keywords:
Status: NEW
Alias: CVE-2026-58211
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-08 21:02 UTC by OSIDB Bzimport
Modified: 2026-08-24 12:14 UTC (History)
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Description OSIDB Bzimport 2026-07-08 21:02:32 UTC 
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.
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