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CVE-2026-44302— Snappier: Infinite loop in SnappyStream decompression on malformed framed input

Quick assessment

Affected
brantburnett Snappier
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.

Snappier是Brant Burnett个人开发者的一个Google Snappy压缩算法的纯C#端口。 Snappier 1.3.1之前版本存在安全漏洞，该漏洞源于SnappierStream解压畸形帧格式Snappy流时进入不可捕获的无限循环。

CVSS 7.5 · High EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
brantburnett Snappier < 1.3.1 affected
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I. Basic Information for CVE-2026-44302

Vulnerability Information
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Vulnerability Title
Snappier: Infinite loop in SnappyStream decompression on malformed framed input
Source: CVE Program / CVE List V5
Vulnerability Description
Snappier is a high performance C# implementation of the Snappy compression algorithm. Prior to 1.3.1, Snappier.SnappyStream enters an uncatchable infinite loop when decompressing a malformed framed-format Snappy stream as small as 15 bytes. This vulnerability is fixed in 1.3.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
Snappier 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Snappier是Brant Burnett个人开发者的一个Google Snappy压缩算法的纯C#端口。 Snappier 1.3.1之前版本存在安全漏洞，该漏洞源于SnappierStream解压畸形帧格式Snappy流时进入不可捕获的无限循环。
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
brantburnett Snappier < 1.3.1 -

II. Public POCs for CVE-2026-44302

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III. Intelligence Information for CVE-2026-44302

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Vendor Advisories for CVE-2026-44302 (1)

IV. Related Vulnerabilities

Same product: Snappier
Same vendor: brantburnett
Same weakness: CWE-835

V. Comments for CVE-2026-44302

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