{"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":"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.","published":"2022-10-06T00:00:00Z","modified":"2026-08-12T03:51:25.804990328Z","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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:25.804990328Z"}}