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I. Basic Information for CVE-2026-29785
Vulnerability Information
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Vulnerability Title
NATS Server panic via malicious compression on leafnode port
Source: NVD (National Vulnerability Database)
Vulnerability Description
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.14 and 2.12.5, if the nats-server has the "leafnode" configuration enabled (not default), then anyone who can connect can crash the nats-server by triggering a panic. This happens pre-authentication and requires that compression be enabled (which it is, by default, when leafnodes are used). Versions 2.11.14 and 2.12.5 contain a fix. As a workaround, disable compression on the leafnode port.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nats-Server 代码问题漏洞
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 2.11.14之前版本和2.12.5之前版本存在代码问题漏洞，该漏洞源于启用leafnode配置时压缩处理不当，可能导致未经身份验证的攻击者触发内核崩溃。
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
VendorProductAffected VersionsCPESubscribe
nats-ionats-server < 2.11.14 -
II. Public POCs for CVE-2026-29785
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 7601 chars
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III. Intelligence Information for CVE-2026-29785
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IV. Related Vulnerabilities
Same product: nats-server
Same vendor: nats-io
Same weakness: CWE-476
V. Comments for CVE-2026-29785

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