Answer in brief
CVE-2026-116137 records a Medium severity (CVSS 6.3) vulnerability in adm-zip through 0.6.1 Duplicate-Entry Validation Bypass via Canonically Equivalent Names. 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.
CVSS is 6.3. 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.
The current feed maps cthackers/adm-zip (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| cthackers/adm-zipgeneric | >=0 <=0.6.1 | Not reported |
Published upstream
Oct 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 25, 2026
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.
Quoted source text, attributed separately from HOL analysis.