CVE-2024-0450

Quoted zip-bomb protection for zipfile

MEDIUM
6.2
CVSS Score
Published: March 19, 2024 at 03:12 PM UTC
Updated: June 17, 2026 at 06:53 AM UTC
1 product affected across 1 vendorPython

Using CPython by Python Software Foundation?

Get instant alerts when new vulnerabilities affect CPython - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.2
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.8.18v < 3.8.193.10.0 ≤ v < 3.10.143.11.0 ≤ v < 3.11.83.12.0 ≤ v < 3.12.23.13.0a1 ≤ v < 3.13.0a33.9.0 ≤ v < 3.9.193.10.03.10.133.11.03.11.73.12.03.12.13.13.0a13.9.03.9.18
Affected range stops below 3.10.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.11.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.12.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.13.0a3, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.8.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.8.19, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.9.19, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.2MEDIUMPSF
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-405

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card