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CVE-2025-30215— NATS-Server Fails to Authorize Certain Jetstream Admin APIs

Quick assessment

Affected
nats-io nats-server
Exploitation
Public or AI PoC available; prioritize validation
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 2.2.0至2.10.27之前版本和2.11.1之前版本存在安全漏洞，该漏洞源于JS API请求缺少访问控制，可能导致数据破坏。

CVSS 9.6 · Critical EPSS 0.60% · P48
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I. Basic Information for CVE-2025-30215

Vulnerability Information
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Vulnerability Title
NATS-Server Fails to Authorize Certain Jetstream Admin APIs
Source: CVE Program / CVE List V5
Vulnerability Description
NATS-Server is a High-Performance server for NATS.io, the cloud and edge native messaging system. In versions starting from 2.2.0 but prior to 2.10.27 and 2.11.1, the management of JetStream assets happens with messages in the $JS. subject namespace in the system account; this is partially exposed into regular accounts to allow account holders to manage their assets. Some of the JS API requests were missing access controls, allowing any user with JS management permissions in any account to perform certain administrative actions on any JS asset in any other account. At least one of the unprotected APIs allows for data destruction. None of the affected APIs allow disclosing stream contents. This vulnerability is fixed in v2.11.1 or v2.10.27.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
NATS-Server 安全漏洞
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 2.2.0至2.10.27之前版本和2.11.1之前版本存在安全漏洞，该漏洞源于JS API请求缺少访问控制，可能导致数据破坏。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
nats-io nats-server >= 2.2.0, < 2.10.27 -

II. Public POCs for CVE-2025-30215

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Qwen3.6-35B-A3B · 9580 chars
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III. Intelligence Information for CVE-2025-30215

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Vendor Advisories for CVE-2025-30215 (1)

IV. Related Vulnerabilities

Same product: nats-server
Same vendor: nats-io
Same weakness: CWE-306

V. Comments for CVE-2025-30215

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