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I. Basic Information for CVE-2026-32284
Vulnerability Information
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Vulnerability Title
Denial of service in github.com/shamaton/msgpack
Source: NVD (National Vulnerability Database)
Vulnerability Description
The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Msgpack 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Msgpack是shamaton开源的一种高效的二进制序列化格式。它允许您在多种语言（如 JSON）之间交换数据。但它更快更小。小整数被编码为一个字节，典型的短字符串除了字符串本身之外只需要一个额外的字节。 Msgpack存在安全漏洞，该漏洞源于处理截断的fixext数据时未能正确验证输入缓冲区长度，可能导致越界读取和运行时崩溃，从而引发拒绝服务攻击。
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
github.com/shamaton/msgpackgithub.com/shamaton/msgpack--
github.com/shamaton/msgpack/v2github.com/shamaton/msgpack/v2--
github.com/shamaton/msgpack/v3github.com/shamaton/msgpack/v3--
II. Public POCs for CVE-2026-32284
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III. Intelligence Information for CVE-2026-32284
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V. Comments for CVE-2026-32284

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