Medium severity5.9NVD Advisory· Published Oct 21, 2026· Updated Oct 21, 2026

CVE-2026-114104

Description

adm-zip before 0.6.1 contains an inconsistent entry resolution vulnerability that allows attackers to bypass content validation by supplying ZIP archives with duplicate entry names. Attackers can craft archives where getEntry() returns the last duplicate while extractAllTo() writes the first, causing unvalidated bytes to be written to disk.

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Affected products

Cthackers/Adm Zipllm-fuzzy
Range: <0.6.1

Patches

Vulnerability mechanics

References

github.com/cthackers/adm-zip/security/advisories/GHSA-p634-w6r4-rjp2nvd
www.vulncheck.com/advisories/adm-zip-before-0.6.1-duplicate-zip-entry-name-validation-bypassnvd

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cvss	0.384
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000