What is CVE-2026-114103?

CVE-2026-114103 is a medium-severity vulnerability in Cthackers Adm-Zip, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-10-21.

How severe is CVE-2026-114103?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Cthackers Adm-Zip

CVE-2026-114103

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.

Vulnerability class: DoS (Denial of Service)

Published 2026-10-21 · last modified 2026-10-21.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Cthackers Adm-Zip

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/cthackers/adm-zip/security/advisories/GHSA-c6fg-446q-cg94 (vendor-advisory)
www.vulncheck.com/advisories/adm-zip-0.6.0-decompression-bomb-guard-bypass-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-114103?: CVE-2026-114103 is a medium-severity vulnerability in Cthackers Adm-Zip, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-10-21.
How severe is CVE-2026-114103?: Medium severity. CVSS v3 base score is 5.3 out of 10.