CVE-2022-39280: Pyup Dependency Parser

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

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.

Affected products

• Pyup Dependency Parser: before 0.5.1 (fixed in 0.5.1)

Published 2022-10-06. Last modified 2026-06-17.