Vulnerability · Published May 12, 2026 · Assigned by GitHub_M
CVE-2026-44302Snappier: Infinite loop in SnappyStream decompression on malformed framed input
High 7.5
In plain English
A high-severity infinite loop in Snappier from brantburnett. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 75.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | snappier | 1.3.1 | GHSA-pggp-6c3x-2xmx |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| brantburnett | Snappier | < 1.3.1 |
Weakness: CWE-835 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/brantburnett/Snappier/security/advisories/GHSA-pggp-6c3x-2xmx x_refsource_CONFIRM