Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-33222— NATS JetStream has an authorization bypass through its Management API

Quick assessment

Affected
nats-io nats-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nats-Server是Nats开源的一个用于 Nats.io、云和边缘本机消息传递系统的高性能服务器。 NATS-Server 2.11.15之前版本和2.12.6之前版本存在授权问题漏洞，该漏洞源于JetStream管理API访问控制不当，可能导致数据被意外覆盖。

CVSS 4.9 · Medium EPSS 0.34% · P26

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-33222

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
NATS JetStream has an authorization bypass through its Management API
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nats-Server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nats-Server是Nats开源的一个用于 Nats.io、云和边缘本机消息传递系统的高性能服务器。 NATS-Server 2.11.15之前版本和2.12.6之前版本存在授权问题漏洞，该漏洞源于JetStream管理API访问控制不当，可能导致数据被意外覆盖。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nats-io nats-server < 2.11.15 -

II. Public POCs for CVE-2026-33222

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-33222

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-33222 (1)

Same Patch Batch · nats-io · 2026-03-25 · 12 CVEs total

CVE-2026-33216 8.6 HIGH NATS has MQTT plaintext password disclosure
CVE-2026-27889 7.5 HIGH NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead
CVE-2026-29785 7.5 HIGH NATS Server panic via malicious compression on leafnode port
CVE-2026-33218 7.5 HIGH NATS has pre-auth server panic via leafnode handling
CVE-2026-33247 7.4 HIGH NATS credentials are exposed in monitoring port via command-line argv
CVE-2026-33217 7.1 HIGH NATS allows MQTT clients to bypass ACL checks
CVE-2026-33246 6.4 MEDIUM NATS: Leafnode connections allow spoofing of Nats-Request-Info identity headers
CVE-2026-33223 6.4 MEDIUM NATS Server: Incomplete Stripping of Nats-Request-Info Header Allows Identity Spoofing
CVE-2026-33219 5.3 MEDIUM NATS is vulnerable to pre-auth DoS through WebSockets client service
CVE-2026-33249 4.3 MEDIUM NATS: Message tracing can be redirected to arbitrary subject
CVE-2026-33248 4.2 MEDIUM NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching

IV. Related Vulnerabilities

Same product: nats-server
Same vendor: nats-io
Same weakness: CWE-285

V. Comments for CVE-2026-33222

No comments yet

Leave a comment