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Vulnerabilities CVE-2026-43637

CVE-2026-43637

High
Open
TLP:CLEAR

Cornac < 2.6.0 Path Traversal via _extract_archive() in download.py

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Description

Cornac before 2.6.0 contains a path traversal (Tar Slip) vulnerability that allows attackers to write arbitrary files outside the intended cache directory by supplying a crafted TAR archive containing ../ sequences, absolute paths, or symlink/hardlink entries to the _extract_archive() function in cornac/utils/download.py. Attackers can trigger this vulnerability through the built-in dataset loaders, which automatically download and extract archives, causing archive.extractall() to write files to arbitrary locations on the filesystem accessible to the running process.

Details

CVSS Score
8.8
EPSS Score
0.43%

35.3th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 15, 2026
Last Modified
Jul 15, 2026
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