BIT-nats-2026-58254

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-58254.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-nats-2026-58254
Aliases
Published
2026-07-14T15:47:20Z
Modified
2026-09-08T08:48:24Z
Summary
NATS Server: Incomplete fix for CVE-2026-33249: Leaf node connections bypass Nats-Trace-Dest permission check
Details

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.8, message trace destination checks were applied to ordinary client connections but not consistently to messages arriving through leafnode connections, allowing a leafnode operator to send trace events to subjects that would not otherwise be permitted and to use trace-only behavior to prevent normal delivery or storage of affected messages. This issue is fixed in versions 2.14.3 and 2.12.8.

Database specific 
{
    "cpes": [
        "cpe:2.3:a:nats:nats_server:*:*:*:*:*:*:*:*"
    ],
    "severity": "Medium"
}
References

Affected packages

Bitnami / nats

Package

Name
nats
Purl
pkg:bitnami/nats

Severity

  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.12.8
Introduced
2.14.0
Fixed
2.14.3

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-58254.json"