CVE-2026-33222
NATS JetStream has an authorization bypass through its Management API
- State
- Published
- Severity
- 4.9 Medium
- Published
- Mar 25, 2026
- Updated
- Mar 26, 2026
- Reserved
- Mar 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.9 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | GitHub_M |
Weaknesses
- CWE-285 Improper Authorization
Affected Products
| Product | Versions |
|---|---|
nats-servernats-io |
|
References
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