CVE-2026-22870
HIGH
GHSA-ffj4-jq7m-9g6v
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
4Description
GuardDog is a CLI tool to identify malicious PyPI packages. Prior to 2.7.1, GuardDog's safe_extract() function does not validate decompressed file sizes when extracting ZIP archives (wheels, eggs), allowing attackers to cause denial of service through zip bombs. A malicious package can consume gigabytes of disk space from a few megabytes of compressed data. This vulnerability is fixed in 2.7.1.
Analysis
GuardDog versions prior to 2.7.1 fail to validate decompressed file sizes when extracting Python package archives, enabling denial of service attacks through zip bomb payloads that can consume gigabytes of disk space from minimal compressed data. Public exploit code exists for this vulnerability, affecting users who rely on GuardDog to scan PyPI packages for malicious content. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Vendor patch is available.
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External POC / Exploit Code
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