CVE-2026-44302

Snappier: Infinite loop in SnappyStream decompression on malformed framed input

State: Published
Severity: 7.5 High
Published: May 12, 2026
Updated: May 18, 2026
Reserved: May 5, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

Product	Versions
Snappierbrantburnett	< 1.3.1Affected

References

https://github.com/brantburnett/Snappier/security/advisories/GHSA-pggp-6c3x-2xmx

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