What’s Vulnerable › Vulnerabilities

CVE-2026-114103: adm-zip 0.6.0 Decompression Bomb Guard Bypass via getDataAsync()

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-21 · updated 2026-10-27
• Weakness: CWE-400

Description

adm-zip 0.6.0 contains a decompression bomb protection bypass that allows attackers to evade the maxOutputLength guard by targeting the asynchronous getDataAsync() path in methods/inflater.js. Attackers can craft ZIP entries with falsified small declared sizes and high-ratio DEFLATE payloads to exhaust memory in applications reading entries asynchronously.

Affected products

• cthackers adm-zip: from 0.6.0 before 0.6.1 — fixed in 0.6.1

How to fix

Upgrade to a fixed version: cthackers adm-zip 0.6.1. Check the vendor advisory for mitigations.

References

• https://github.com/cthackers/adm-zip/security/advisories/GHSA-c6fg-446q-cg94
• https://www.vulncheck.com/advisories/adm-zip-0.6.0-decompression-bomb-guard-bypass-via-getdataasync
• https://github.com/cthackers/adm-zip/security/advisories/GHSA-c6fg-446q-cg94

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