NATS allows MQTT clients to bypass ACL checks
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.1epss 0.3%
probabilidade de exploração
0.3%top 83% das CVEs
exploração observada
nãonenhuma fonte reporta
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, when using ACLs on message subjects, these ACLs were not applied in the `$MQTT.>` namespace, allowing MQTT clients to bypass ACL checks for MQTT subjects. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Produtos afetados
nats-io · nats-serverReferências
https://access.redhat.com/errata/RHSA-2026:21769https://access.redhat.com/errata/RHSA-2026:22347https://access.redhat.com/errata/RHSA-2026:23345https://access.redhat.com/security/cve/CVE-2026-33217https://advisories.nats.io/CVE/secnote-2026-07.txthttps://bugzilla.redhat.com/show_bug.cgi?id=2451446https://github.com/nats-io/nats-server/security/advisories/GHSA-jxxm-27vp-c3m5https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33217.json