BIT-nats-2026-58214

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-58214.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-nats-2026-58214
Aliases
Published
2026-07-14T15:47:14Z
Modified
2026-09-08T08:47:35Z
Summary
NATS Server: MQTT subscribe ACL bypass via $MQTT.deliver.pubrel prefix (incomplete fix for CVE-2026-33217)
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, an authenticated MQTT client could subscribe to the internal $MQTT.deliver.pubrel subject family, bypassing configured subscribe permissions and exposing MQTT QoS2 protocol metadata for sessions in the account. This issue is fixed in versions 2.14.3 and 2.12.12.

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

  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.12.12
Introduced
2.14.0
Fixed
2.14.3

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-58214.json"