CVE detail
CVE-2026-58208
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 WebSocket listener could route requests for the MQTT-over-WebSocket path into MQTT handling even when MQTT was not configured, allowing an unauthenticated client with access to the WebSocket listener to reach uninitialized MQTT state and crash the server process. This issue is fixed in versions 2.14.3 and 2.12.12.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 19.5 · diversity 10.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 6
- within the 30d window
- Peak daily
- 5
- highest bucket
Evidence
Source links by recency
6 source links · newest first
- CVE-2026-58208 NATS Server: MQTT-over-WebSocket Path Can Crash WebSocket-Only JetStream Servers Before MQTT Is EnabledMicrosoft MSRC
Information published.
vendormsrc.microsoft.comJul 11, 2026, 8:08 AM No excerpt available.
Exploitgithub.comJul 8, 2026, 9:16 PMNo excerpt available.
Exploitgithub.comJul 8, 2026, 9:16 PMNo excerpt available.
Exploitgithub.comJul 8, 2026, 9:16 PMNo excerpt available.
Exploitgithub.comJul 8, 2026, 9:16 PMNo excerpt available.
Exploitgithub.comJul 8, 2026, 9:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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