CVE-2026-58208
- Source
- https://cve.org/CVERecord?id=CVE-2026-58208
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58208.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-58208
- Aliases
-
- GHSA-p957-7v2w-g93g
- Downstream
- Published
- 2026-07-08T20:17:39.187Z
- Modified
- 2026-07-11T04:04:10.414689021Z
- Severity
-
- 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
- Summary
- NATS Server: MQTT-over-WebSocket Path Can Crash WebSocket-Only JetStream Servers Before MQTT Is Enabled
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-248" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58208.json" }- References
-
- https://github.com/nats-io/nats-server/releases/tag/v2.12.12
- https://github.com/nats-io/nats-server/releases/tag/v2.14.3
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58208.json
- https://github.com/nats-io/nats-server/security/advisories/GHSA-p957-7v2w-g93g
- https://nvd.nist.gov/vuln/detail/CVE-2026-58208
- https://github.com/nats-io/nats-server/commit/73b3dd9a5ea0fa7bf08b702338676355b29b5fb4
- https://github.com/nats-io/nats-server/commit/837536b98b3a9280b993282155ff2bdd3ca38c30
Affected packages
Git / github.com/nats-io/nats-server
Affected ranges
- Type
- GIT
- Repo
- https://github.com/nats-io/nats-server
- Events
- Database specific
{ "extracted_events": [ { "introduced": "2.12.0" }, { "fixed": "2.12.12" }, { "introduced": "2.14.0" }, { "fixed": "2.14.3" } ], "cpe": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*", "source": [ "CPE_RANGE", "REFERENCES" ] }
Affected versions
v2.*
v2.12.0
v2.12.1
v2.12.1-RC.1
v2.12.1-RC.2
v2.12.1-RC.3
v2.12.1-RC.4
v2.12.1-RC.5
v2.12.10
v2.12.10-RC.1
v2.12.11
v2.12.2
v2.12.2-RC.1
v2.12.2-RC.2
v2.12.2-RC.3
v2.12.2-RC.4
v2.12.3
v2.12.3-RC.1
v2.12.3-RC.2
v2.12.3-RC.3
v2.12.3-RC.4
v2.12.3-RC.5
v2.12.4
v2.12.4-RC.1
v2.12.4-RC.2
v2.12.4-RC.3
v2.12.4-RC.4
v2.12.4-RC.5
v2.12.4-RC.6
v2.12.5
v2.12.5-RC.1
v2.12.5-RC.2
v2.12.6
v2.12.7
v2.12.8
v2.12.9
v2.12.9-RC.1
v2.12.9-RC.2
v2.14.0
v2.14.1
v2.14.1-RC.1
v2.14.1-RC.2
v2.14.2
v2.14.2-RC.1