CVE-2022-39280 MEDIUM

CVE-2022-39280: Regular expression denial of service in dparse

Vendor Pyupio
Product dparse
Weakness CWE-400
Published October 6, 2022
Last update April 23, 2025
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CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

dparse is a parser for Python dependency files. dparse in versions before 0.5.2 contain a regular expression that is vulnerable to a Regular Expression Denial of Service. All the users parsing index server URLs with dparse are impacted by this vulnerability. A patch has been applied in version `0.5.2`, all the users are advised to upgrade to `0.5.2` as soon as possible. Users unable to upgrade should avoid passing index server URLs in the source file to be parsed.

Key dates

02Disclosure timeline

October 6, 2022 CVE published
April 23, 2025 Record updated