{"id":"CVE-2022-39280","aliases":["EUVD-2022-0096","GHSA-8fg9-p83m-x5pq","PYSEC-2022-301"],"status":"published","title":"Regular expression denial of service in dparse","description":"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.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01337,"percentile":0.71436,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333","CWE-400"],"published":"2022-09-27T15:28:00Z","modified":"2026-10-28T02:30:38Z","fixes":[{"ecosystem":"PyPI","package":"dparse","fixed_in":["0.5.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"dparse","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2"}]}]},{"source":"osv","ecosystem":"PyPI","package":"dparse","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2"}]}],"versions":["0.1.0","0.1.1","0.2.0","0.2.1","0.3.0","0.4.0","0.4.1","0.5.0","0.5.1"]},{"source":"osv","ecosystem":"PyPI","package":"dparse","ranges":[{"type":"GIT","events":[{"introduced":"0"},{"fixed":"8c990170bbd6c0cf212f1151e9025486556062d5"},{"fixed":"d87364f9db9ab916451b1b036cfeb039e726e614"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.2"}]}],"versions":["0.1.0","0.1.1","0.2.0","0.2.1","0.3.0","0.4.0","0.4.1","0.5.0","0.5.1"]}],"products":[{"vendor":"pyup","product":"dependency_parser"},{"vendor":"pyupio","product":"dparse"}],"references":[{"url":"https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS","tags":["x_transferred","Technical Description","Third Party Advisory","web"]},{"url":"https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pq","tags":["x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5","tags":["x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614","tags":["x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39280","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/dparse/PYSEC-2022-301.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8fg9-p83m-x5pq"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39280.json","tags":["advisory"]},{"url":"https://github.com/pyupio/dparse","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-39280","title":"Regular expression denial of service in dparse","description":"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.","status":"published","published":"2022-10-06T00:00:00Z","modified":"2025-04-23T16:52:14.285Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:34:39.559326Z"}],"euvd":[{"id":"EUVD-2022-0096","description":"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.","status":"published","published":"2022-10-06T00:00:00Z","modified":"2025-04-23T16:52:14Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T20:52:11.891054Z"}],"ghsa":[{"id":"GHSA-8fg9-p83m-x5pq","title":"ReDoS issue in dparse","description":"### 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","status":"published","published":"2022-09-27T15:28:00Z","modified":"2024-11-18T16:26:28Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400","CWE-1333"],"updated_at":"2026-11-02T14:38:19.029049Z"}],"nvd":[{"id":"CVE-2022-39280","description":"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.","status":"published","published":"2022-10-06T18:16:18.007Z","modified":"2026-06-17T04:58:03.68Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-400","CWE-1333"],"updated_at":"2026-11-02T14:07:29.026521Z"}],"osv":[{"id":"CVE-2022-39280","title":"Regular expression denial of service in dparse","description":"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.","status":"published","published":"2022-10-06T00:00:00Z","modified":"2026-10-28T02:30:38.284782514Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:26.860704Z"},{"id":"GHSA-8fg9-p83m-x5pq","title":"ReDoS issue in dparse","description":"### 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","status":"published","published":"2022-09-27T15:28:00Z","modified":"2024-11-20T05:25:43.051059Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-1333","CWE-400"],"updated_at":"2026-11-02T15:46:42.437513Z"},{"id":"PYSEC-2022-301","description":"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.","status":"published","published":"2022-10-06T18:16:00Z","modified":"2023-11-08T04:10:17.52968Z","updated_at":"2026-11-02T15:52:53.449407Z"}]}}