PT-2026-60172 · Pypi · Cornac

Rahul Karne + 1 · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-43637

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Name of the Vulnerable Software and Affected Versions Cornac versions prior to 2.6.0

Description A path traversal issue, specifically a Tar Slip, exists when the extract archive() function in cornac/utils/download.py processes a crafted TAR archive. By using absolute paths, symlink/hardlink entries, or ../ sequences, an attacker can cause archive.extractall() to write arbitrary files outside the intended cache directory to any location on the filesystem accessible to the running process. This can be triggered via built-in dataset loaders that automatically download and extract archives.

Recommendations Update to version 2.6.0 or later. As a temporary mitigation, restrict the use of the extract archive() function or avoid using built-in dataset loaders with untrusted archives.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-43637

Affected Products

Cornac

References · 6

• https://github.com/PreferredAI/cornac/commit/8a50be72c11569b6747c6b96d6e31a0a1962f1a8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43637 · Security Note
• https://github.com/PreferredAI/cornac/pull/709 · Note
• https://github.com/PreferredAI/cornac/releases/tag/v2.6.0 · Note
• https://twitter.com/OrizonCyber/status/2077407857624883650 · Twitter Post
• https://vulncheck.com/advisories/cornac-path-traversal-via-extract-archive-in-download-py · Note