Vulnerability Information
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Vulnerability Title
NATS is vulnerable to pre-auth DoS through WebSockets client service
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, a malicious client which can connect to the WebSockets port can cause unbounded memory use in the nats-server before authentication; this requires sending a corresponding amount of data. This is a milder variant of CVE-2026-27571. That earlier issue was a compression bomb, this vulnerability is not. Attacks against this new issue thus require significant client bandwidth. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, disable websockets if not required for project deployment.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Vulnerability Type
不加限制或调节的资源分配
Vulnerability Title
Nats-Server 安全漏洞
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之前版本存在安全漏洞，该漏洞源于恶意客户端可导致无限制内存使用。
CVSS Information
N/A
Vulnerability Type
N/A