CVE-2026-44302

Snappier: Infinite loop in SnappyStream decompression on malformed framed input

HIGH

7.5

CVSS Score

Published: May 12, 2026 at 09:33 PM UTC

Updated: October 26, 2026 at 02:10 PM UTC

1 product affected across 1 vendorSnappier

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Severity

HIGH7.5

Exploit prediction

EPSS 0.3%

SSVC

PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Snappier · Brantburnett

90%

v < 1.3.1

Affected range stops below 1.3.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRM

Source: cverecord

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

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-835

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