CVE-2024-0450 | Quoted zip-bomb protection for zipfile

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.

Published: 2024-03-19 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-0450 is rated Low Risk (33.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.34%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-0450

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.15% 0.34% +0.19%
2 2026-06-09 0.15% 0.15% -0.00%
3 2026-05-27 — 0.15% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-0450

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.2 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.5 3.6 [email protected]

Weakness enumeration for CVE-2024-0450

OS Trackers for CVE-2024-0450

vendor priority summary link
alpine — CVE-2024-0450: 1 source package rows (python3); 1 state rows across 1 repos (3.17-main); fixed 1, open 0. https://security.alpinelinux.org/vuln/CVE-2024-0450
debian not yet assigned CVE-2024-0450 not yet assigned priority: Debian including 4 source packages (pypy3, python2.7, python3.11, python3.9), 8 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 1. https://security-tracker.debian.org/tracker/CVE-2024-0450
gentoo high CVE-2024-0450: 1 GLSA(s) (202405-01), 4 atom(s) (dev-lang/python, dev-python/pypy3, dev-python/pypy3_10, dev-python/pypy3_9); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-0450
redhat medium — https://access.redhat.com/security/cve/CVE-2024-0450
suse medium CVE-2024-0450 severity moderate: SUSE including 577 source package names (0.0.17-1.1:libpython3_6m1_0-3.6.15-150300.10.65.1, 0.0.17-1.1:python3-3.6.15-150300.10.65.2, …), 2473 product×package rows across 408 product lines (Container bci/bci-base-fips, Container bci/bci-sle15-kernel-module-devel, … (408 product lines)): Fixed 2224, Known Affected 225, Known Not Affected 23, Will Not Fix 1. https://www.suse.com/security/cve/CVE-2024-0450/
ubuntu medium CVE-2024-0450 medium priority: Ubuntu including 10 source packages (python2.7, python3.10, …), 89 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 60, released 17, needs-triage 10, not-affected 2. https://ubuntu.com/security/CVE-2024-0450

Affected software / configurations for CVE-2024-0450

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2024-0450

URL Tags
http://www.openwall.com/lists/oss-security/2024/03/20/5
https://github.com/python/cpython/commit/30fe5d853b56138dbec62432d370a1f99409fc85
https://github.com/python/cpython/commit/66363b9a7b9fe7c99eba3a185b74c5fdbf842eba
https://github.com/python/cpython/commit/70497218351ba44bffc8b571201ecb5652d84675
https://github.com/python/cpython/commit/a2c59992e9e8d35baba9695eb186ad6c6ff85c51
https://github.com/python/cpython/commit/a956e510f6336d5ae111ba429a61c3ade30a7549
https://github.com/python/cpython/commit/d05bac0b74153beb541b88b4fca33bf053990183
https://github.com/python/cpython/commit/fa181fcf2156f703347b03a3b1966ce47be8ab3b
https://github.com/python/cpython/issues/109858
https://lists.debian.org/debian-lts-announce/2024/03/msg00024.html
https://lists.debian.org/debian-lts-announce/2024/03/msg00025.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/T3IGRX54M7RNCQOXVQO5KQKTGWCOABIM/
https://lists.fedoraproject.org/archives/list/[email protected]/message/U5VHWS52HGD743C47UMCSAK2A773M2YE/
https://mail.python.org/archives/list/[email protected]/thread/XELNUX2L3IOHBTFU7RQHCY6OUVEWZ2FG/
https://www.bamsoftware.com/hacks/zipbomb/
https://lists.debian.org/debian-lts-announce/2024/11/msg00005.html
https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html
https://security.netapp.com/advisory/ntap-20250411-0005/
cvelogic Threat Intelligence