CVE-2024-0450: Python Cpython

Medium severity, CVSS 6.2. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Python Cpython: before 3.8.18 (fixed in 3.8.18); version 3.9.18 only; version 3.10.13 only; version 3.11.7 only; version 3.12.1 only
• Python Software Foundation Cpython: before 3.8.19 (fixed in 3.8.19); from 3.9.0, before 3.9.19 (fixed in 3.9.19); from 3.10.0, before 3.10.14 (fixed in 3.10.14); from 3.11.0, before 3.11.8 (fixed in 3.11.8); from 3.12.0, before 3.12.2 (fixed in 3.12.2); from 3.13.0a1, before 3.13.0a3 (fixed in 3.13.0a3)

Published 2024-03-19. Last modified 2026-06-17.