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EUVD-2026-233537

fkie_cve-2022-39280

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.

GHSA-8fg9-p83m-x5pq — ReDoS issue in dparse

Affected: PyPI: dparse

### Impact dparse versions prior to 0.5.1 contain a regular expression that is vulnerable to [ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) (Regular Expression Denial of Service).

All users parsing index server URLs with dparse are impacted by this vulnerability.

### Patches The Patch is applied in the `0.5.2` version, all users are recommended to upgrade as soon as possible.

### Workarounds Avoid passing index server URLs in the source file to be parsed.

### References [https://github.com/pyupio/dparse/tree/security/remove-intensive-regex](https://github.com/pyupio/dparse/tree/security/remove-intensive-regex)

### For more information If you have any questions or comments about this advisory: * Email us at [support@pyup.io](mailto:support@pyup.io)

gsd-2022-39280

PYSEC-2022-301

Affected: PyPI: dparse