CVE-2026-22870CWE-409

GuardDog Zip Bomb Vulnerability in safe_extract() Allows DoS

High · published January 13, 2026

CVSS v4.0
7.1
EPSS
1%
Percentile
42.7
In the wild
Unconfirmed
What it is

⚡ Watch out for zip bombs! GuardDog's safe_extract() function prior to version 2.7.1 fails to validate file sizes, allowing attackers to unleash mega-sized files from tiny packages. 🔥 Imagine a delivery service that accepts a tiny package but delivers a mountain of boxes to your front door, clogging up your entire driveway. That’s what this vulnerability does to your storage space when decompressed files go unchecked! An attacker can exploit this flaw to trigger a denial of service by turning a few megabytes of compressed data into gigabytes of disk space consumption. Your system could slow to a crawl or become entirely unusable, leaving you scrambling to regain control!

Put simply

Imagine a delivery service that accepts a tiny package but delivers a mountain of boxes to your front door, clogging up your entire driveway. That’s what this vulnerability does to your storage space when decompressed files go unchecked! This vulnerability in GuardDog's safe_extract() function allows for denial of service via zip bombs, as it does not check the decompressed file sizes of ZIP archives, leading to excessive disk space usage.

What to do

An attacker can exploit this flaw to trigger a denial of service by turning a few megabytes of compressed data into gigabytes of disk space consumption. Your system could slow to a crawl or become entirely unusable, leaving you scrambling to regain control! Upgrade GuardDog to version 2.7.1 immediately to patch this vulnerability. Regularly audit your packages and consider implementing additional safeguards against malicious uploads. You've got this! Follow these steps, and you'll keep your system safe and sound. 🛡️

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00511 · 42.7th percentile
Weakness
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
Published
2026-01-13T20:43Z
EPSS history
Timeline
  • 13 JAN 20:43Z
    GuardDog Zip Bomb Vulnerability in safe_extract() Allows DoS
    cvelistv5