CVE-2026-33216

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Source
https://cve.org/CVERecord?id=CVE-2026-33216
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33216.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33216
Aliases
Downstream
Related
Published
2026-03-25T19:41:55.670Z
Modified
2026-04-10T05:42:39.356623Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
NATS has MQTT plaintext password disclosure
Details

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, for MQTT deployments using usercodes/passwords: MQTT passwords are incorrectly classified as a non-authenticating identity statement (JWT) and exposed via monitoring endpoints. Versions 2.11.14 and 2.12.6 contain a fix. As a workaround, ensure monitoring end-points are adequately secured. Best practice remains to not expose the monitoring endpoint to the Internet or other untrusted network users.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33216.json",
    "cwe_ids": [
        "CWE-256"
    ]
}
References

Affected packages

Git / github.com/nats-io/nats-server

Affected ranges

Type
GIT
Repo
https://github.com/nats-io/nats-server
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
bef17e1d9de6574fae0eabe1798db0d4529834e4
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.11.15"
        }
    ]
}
Type
GIT
Repo
https://github.com/nats-io/nats-server
Events
Introduced
4dccf778573cd9a9e52fb8f119718459f6f2f761
Fixed
0e0639058e0d2d8fce0cc34941f9897da152ab32
Database specific 
{
    "versions": [
        {
            "introduced": "2.12.0-RC.1"
        },
        {
            "fixed": "2.12.6"
        }
    ]
}

Affected versions

v0.*
v0.5.1
v0.5.2
v0.5.4
v0.5.6
v0.6.0
v0.6.2
v0.6.4
v0.6.6
v0.6.8
v0.7.0
v0.7.2
v0.8.0
v0.8.1
v0.9.2
v0.9.4
v0.9.6
v1.*
v1.0.0
v1.0.2
v1.0.4
v1.0.6
v1.1.0
v1.2.0
v1.3.0
v2.*
v2.0.0
v2.0.0-RC14
v2.0.0-RC19
v2.0.2
v2.0.4
v2.1.0
v2.1.2
v2.1.4
v2.1.6
v2.1.7
v2.10.0
v2.10.1
v2.10.2
v2.10.3
v2.11.0
v2.11.0-RC.1
v2.11.0-RC.2
v2.11.0-RC.3
v2.11.0-RC.4
v2.11.0-RC.5
v2.11.10
v2.11.10-RC.1
v2.11.11
v2.11.11-RC.1
v2.11.11-RC.2
v2.11.11-RC.3
v2.11.11-RC.4
v2.11.12
v2.11.12-RC.1
v2.11.12-RC.2
v2.11.12-RC.3
v2.11.12-RC.4
v2.11.12-RC.5
v2.11.12-RC.6
v2.11.12-RC.7
v2.11.14
v2.11.2
v2.11.2-RC.1
v2.11.2-RC.2
v2.11.2-RC.3
v2.11.3
v2.11.3-RC.1
v2.11.3-RC.2
v2.11.4
v2.11.4-RC.1
v2.11.4-RC.2
v2.11.4-RC.3
v2.11.5
v2.11.5-RC.1
v2.11.5-RC.2
v2.11.5-RC.3
v2.11.5-RC.4
v2.11.6
v2.11.6-RC.1
v2.11.7
v2.11.7-RC.1
v2.11.7-RC.2
v2.11.7-RC.3
v2.11.8
v2.11.8-RC.1
v2.11.9
v2.11.9-RC.1
v2.11.9-RC.2
v2.11.9-RC.3
v2.12.0
v2.12.0-RC.1
v2.12.0-RC.2
v2.12.0-RC.3
v2.12.0-RC.4
v2.12.0-RC.5
v2.12.0-RC.6
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
v2.12.2
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
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.2.6
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.3.4
v2.4.0
v2.5.0
v2.6.0
v2.6.1
v2.6.2
v2.6.3
v2.6.4
v2.6.5
v2.6.6
v2.7.0
v2.7.0-rc1
v2.7.0-rc2
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.8.0
v2.8.1
v2.8.2
v2.8.3
v2.8.4
v2.9.0
v2.9.1
v2.9.10
v2.9.11
v2.9.12
v2.9.14
v2.9.15
v2.9.16
v2.9.17
v2.9.18
v2.9.19
v2.9.2
v2.9.20
v2.9.21
v2.9.22
v2.9.3
v2.9.4
v2.9.5
v2.9.6
v2.9.7
v2.9.8
v2.9.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33216.json"