{"id":"CVE-2022-39280","aliases":["GHSA-8fg9-p83m-x5pq","PYSEC-2022-301"],"url":"https://o3.security/vulnerability/CVE-2022-39280","summary":"Regular expression denial of service in dparse","details":"### Impact\ndparse 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).\n\nAll users parsing index server URLs with dparse are impacted by this vulnerability.\n\n### Patches\nThe Patch is applied in the `0.5.2` version, all users are recommended to upgrade as soon as possible.\n\n### Workarounds\nAvoid passing index server URLs in the source file to be parsed.\n\n### References\n[https://github.com/pyupio/dparse/tree/security/remove-intensive-regex](https://github.com/pyupio/dparse/tree/security/remove-intensive-regex)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [support@pyup.io](mailto:support@pyup.io)\n","published":"2022-10-06T00:00:00Z","modified":"2026-10-28T02:30:38.284782514Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"dparse","fixedVersion":"0.5.2"}],"fix":{"url":"https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5","label":"pyupio/dparse@8c99017"},"references":[{"type":"WEB","url":"https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39280.json"},{"type":"ADVISORY","url":"https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39280"},{"type":"FIX","url":"https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5"},{"type":"FIX","url":"https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/dparse/PYSEC-2022-301.yaml"},{"type":"PACKAGE","url":"https://github.com/pyupio/dparse"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:38.284782514Z"}}