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Back to active CVEs
Medium · CVSS 6.9CVE-2026-114103

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

Answer in brief

CVE-2026-114103 records a Medium severity (CVSS 6.9) vulnerability in adm-zip 0.6.0 Decompression Bomb Guard Bypass via getDataAsync(). The current sources do not mark it as known exploited. The current feed maps cthackers/adm-zip (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 21, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.9
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps cthackers/adm-zip (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
cthackers/adm-zipgeneric>=0.6.0 <0.6.10.6.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for cthackers/adm-zip.
  2. 2Review the reported fix. Update cthackers/adm-zip to 0.6.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 21, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • adm-zip before 0.6.1 Denial of Service via inflateAsync Unhandled Error EventSame cthackers/adm-zip package
  • adm-zip before 0.6.1 Duplicate ZIP Entry Name Validation BypassSame cthackers/adm-zip package
  • Adm-zip before 0.6.1 Privilege Escalation via keepOriginalPermission Setuid BitsSame cthackers/adm-zip package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Oct 21, 2026
References
2 linked sources
Open source record