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Cornac < 2.6.0

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Cornac Tar Slip Vulnerability Allows Arbitrary File Writes via Path Traversal (CVE-2026-43637)

A path traversal vulnerability, dubbed 'Tar Slip' and tracked as CVE-2026-43637, exists in Cornac versions prior to 2.6.0, allowing attackers to write arbitrary files outside the intended cache directory by supplying a specially crafted TAR archive containing path manipulation sequences, which is then processed by built-in dataset loaders.

Cornac < 2.6.0 vulnerability path-traversal tar-slip data-science python
2t 1c