CVE-2026-33222

MEDIUM

NATS JetStream has an authorization bypass through its Management API

Title source: cna
STIX 2.1

Description

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, users with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, if developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions.

References (2)

Scores

CVSS v3 4.9
EPSS 0.0003
EPSS Percentile 7.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-285
Status published
Products (5)
linuxfoundation/nats-server < 2.11.15
nats-io/nats-server 0Go
nats-io/nats-server 0 - 2.11.15Go
nats-io/nats-server < 2.11.15
nats-io/nats-server >= 2.12.0-RC.1, < 2.12.6
Published Mar 25, 2026
Tracked Since Mar 26, 2026