{"schema_version":"1.9.0","id":"BIT-nats-2026-33216","published":"2026-03-27T17:45:13.444Z","modified":"2026-09-08T08:48:24.408504195Z","aliases":["CVE-2026-33216","GHSA-v722-jcv5-w7mc","GO-2026-4836"],"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.","affected":[{"package":{"name":"nats","ecosystem":"Bitnami","purl":"pkg:bitnami/nats"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.15"},{"introduced":"2.12.0"},{"fixed":"2.12.6"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-33216.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}],"references":[{"type":"ADVISORY","url":"https://advisories.nats.io/CVE/secnote-2026-05.txt"},{"type":"FIX","url":"https://github.com/nats-io/nats-server/commit/b5b63cfc35a57075e09c1f57503d31721bed8099"},{"type":"ADVISORY","url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-v722-jcv5-w7mc"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33216"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21769"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22347"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:23345"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-33216"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451448"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33216.json"}],"database_specific":{"cpes":["cpe:2.3:a:nats:nats_server:*:*:*:*:*:go:*:*"],"severity":"High"}}