CVE-2026-116137mediumCWE-436

CVE-2026-116137: medium-severity vulnerability in cthackers adm-zip

adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.3epss 0.3%
adm-zip through 0.6.1 contains a duplicate-entry validation bypass that allows attackers to evade the readEntries() check by using canonically equivalent entry names like './hello.txt' and 'hello.txt'. Attackers can craft ZIP archives where getEntry() or readAsText() validates benign content while extractAllTo() writes malicious content to the same path, bypassing integrity checks.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
cthackers · adm-zip
Related CVEs — cthackers adm-zip

In the same product, most dangerous first.

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