Description
adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, getData() in zipEntry.js trusts an entry's central-directory uncompressed size and allocates output memory before validating that value against the actual compressed data and decompression result. A small crafted ZIP can declare a multi-gigabyte uncompressed size, causing Buffer.alloc and decompression handling to commit excessive resident memory before CRC validation reports an error. Applications that read entries from untrusted archives can therefore be terminated by the operating system or suffer service-wide memory exhaustion. This issue is fixed in version 0.6.1.
Published: 2026-09-18
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7q85-xj36-vmfc adm-zip: Uncontrolled memory allocation via the declared uncompressed size (DoS)
History

Sun, 20 Sep 2026 04:45:00 +0000

Type Values Removed Values Added
First Time appeared Cthackers
Cthackers adm-zip
Vendors & Products Cthackers
Cthackers adm-zip

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 18 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description adm-zip is a JavaScript library for creating and extracting ZIP archives in Node.js. Prior to 0.6.1, getData() in zipEntry.js trusts an entry's central-directory uncompressed size and allocates output memory before validating that value against the actual compressed data and decompression result. A small crafted ZIP can declare a multi-gigabyte uncompressed size, causing Buffer.alloc and decompression handling to commit excessive resident memory before CRC validation reports an error. Applications that read entries from untrusted archives can therefore be terminated by the operating system or suffer service-wide memory exhaustion. This issue is fixed in version 0.6.1.
Title adm-zip: Uncontrolled memory allocation via the declared uncompressed size (DoS)
Weaknesses CWE-789
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Cthackers Adm-zip
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-18T17:11:11.964Z

Reserved: 2026-08-20T19:17:14.375Z

Link: CVE-2026-77301

cve-icon Vulnrichment

Updated: 2026-09-18T17:11:03.081Z

cve-icon NVD

Status : Received

Published: 2026-09-18T17:17:00.507

Modified: 2026-09-18T18:17:14.163

Link: CVE-2026-77301

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-20T04:30:17Z

Weaknesses