Keras version 3.11.3 is affected by a path traversal vulnerability in the keras.utils.get_file() function when extracting tar archives. The vulnerability arises because the function uses Python's tarfile.extractall() method without the security-critical filter='data' parameter. Although Keras attempts to filter unsafe paths using filter_safe_paths(), this filtering occurs before extraction, and a PATH_MAX symlink resolution bug triggers during extraction. This bug causes symlink resolution to fail due to path length limits, resulting in a security bypass that allows files to be written outside the intended extraction directory. This can lead to arbitrary file writes outside the cache directory, enabling potential system compromise or malicious code execution. The vulnerability affects Keras installations that process tar archives with get_file() and does not affect versions where this extraction method is secured with the appropriate filter parameter.
History

Wed, 03 Dec 2025 00:15:00 +0000


Mon, 01 Dec 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Keras
Keras keras
Vendors & Products Keras
Keras keras

Fri, 28 Nov 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 28 Nov 2025 14:30:00 +0000

Type Values Removed Values Added
Description Keras version 3.11.3 is affected by a path traversal vulnerability in the keras.utils.get_file() function when extracting tar archives. The vulnerability arises because the function uses Python's tarfile.extractall() method without the security-critical filter='data' parameter. Although Keras attempts to filter unsafe paths using filter_safe_paths(), this filtering occurs before extraction, and a PATH_MAX symlink resolution bug triggers during extraction. This bug causes symlink resolution to fail due to path length limits, resulting in a security bypass that allows files to be written outside the intended extraction directory. This can lead to arbitrary file writes outside the cache directory, enabling potential system compromise or malicious code execution. The vulnerability affects Keras installations that process tar archives with get_file() and does not affect versions where this extraction method is secured with the appropriate filter parameter.
Title Path Traversal Vulnerability in keras-team/keras via Tar Archive Extraction in keras.utils.get_file()
Weaknesses CWE-22
References
Metrics cvssV3_0

{'score': 8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: @huntr_ai

Published: 2025-11-28T14:06:02.069Z

Updated: 2025-11-28T15:08:13.714Z

Reserved: 2025-11-03T17:43:47.102Z

Link: CVE-2025-12638

cve-icon Vulnrichment

Updated: 2025-11-28T15:07:55.337Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-28T15:16:00.270

Modified: 2025-12-01T15:39:33.110

Link: CVE-2025-12638

cve-icon Redhat

Severity : Important

Publid Date: 2025-11-28T14:06:02Z

Links: CVE-2025-12638 - Bugzilla