An issue was found in the CPython `zipfile` module affecting versions 3.12.1, 3.11.7, 3.10.13, 3.9.18, and 3.8.18 and prior.
The zipfile module is vulnerable to “quoted-overlap” zip-bombs which exploit the zip format to create a zip-bomb with a high compression ratio. The fixed versions of CPython makes the zipfile module reject zip archives which overlap entries in the archive.
CVE ID: CVE-2024-0450
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.2
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor: Python Software Foundation
Product: CPython
EPSS Score: 0.15% (probability of being exploited)
EPSS Percentile: 36.67% (scored less or equal to compared to others)
EPSS Date: 2025-04-20 (when was this score calculated)
SSVC Exploitation: poc
SSVC Technical Impact: partial
SSVC Automatable: false