Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck

CVE-2026-114102adm-zip before 0.6.1 Denial of Service via inflateAsync Unhandled Error Event

High 7.5

In plain English

A high-severity security flaw in adm-zip from cthackers. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 60.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack tooling1Public PoC

Official description

adm-zip before 0.6.1 contains a denial of service vulnerability that allows unauthenticated attackers to crash the Node.js process via a malformed ZIP file, because inflateAsync in methods/inflater.js lacks a zlib stream error listener. Attackers can supply a ZIP with corrupted DEFLATE data processed by readFileAsync, readAsTextAsync, extractAllToAsync, or getDataAsync, triggering an uncatchable exception that terminates all in-flight requests.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	adm-zip	0.6.1	GHSA-8238-w5pm-2374

Affected products (as reported)

Vendor	Product	Versions
cthackers	adm-zip	0 – before 0.6.1

Weakness: CWE-248 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-8238-w5pm-2374) vendor-advisory
VulnCheck Advisory: adm-zip before 0.6.1 Denial of Service via inflateAsync Unhandled Error Event third-party-advisory