{"id":"CVE-2020-15101","aliases":["EUVD-2020-0082","GHSA-7pmh-vrww-25xx","PYSEC-2020-233"],"status":"published","title":"Nested directory structure can lead to Uncontrolled Resource Consumption in freewvs","description":"In freewvs before 0.1.1, a directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users. This has been patched in 0.1.1.","severity":{"version":"3.1","score":2.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00693,"percentile":0.53352,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-674"],"published":"2020-07-14T21:35:12Z","modified":"2026-10-20T10:51:52Z","fixes":[{"ecosystem":"PyPI","package":"freewvs","fixed_in":["0.1.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"freewvs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"freewvs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.1"}]}],"versions":["0.1.0"]},{"source":"osv","ecosystem":"PyPI","package":"freewvs","ranges":[{"type":"GIT","events":[{"introduced":"0"},{"fixed":"83a6b55c0435c69f447488b791555e6078803143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.1.1"}]}],"versions":["0.1.0"]}],"products":[{"vendor":"schokokeks","product":"freewvs"},{"vendor":"schokokeksorg","product":"freewvs"}],"references":[{"url":"https://github.com/schokokeksorg/freewvs/security/advisories/GHSA-7pmh-vrww-25xx","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/schokokeksorg/freewvs/commit/83a6b55c0435c69f447488b791555e6078803143","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15101","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/freewvs/PYSEC-2020-233.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-7pmh-vrww-25xx"},{"url":"https://github.com/schokokeksorg/freewvs","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2020-15101","title":"Nested directory structure can lead to Uncontrolled Resource Consumption in freewvs","description":"In freewvs before 0.1.1, a directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users. This has been patched in 0.1.1.","status":"published","published":"2020-07-14T21:35:12Z","modified":"2024-08-04T13:08:21.765Z","cvss":[{"version":"3.1","score":2.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:50.228781Z"}],"euvd":[{"id":"EUVD-2020-0082","description":"In freewvs before 0.1.1, a directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users. This has been patched in 0.1.1.","status":"published","published":"2020-07-14T21:35:12Z","modified":"2024-08-04T13:08:21Z","cvss":[{"version":"3.1","score":2.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-03T03:07:33.100327Z"}],"ghsa":[{"id":"GHSA-7pmh-vrww-25xx","title":"freewvs's nested directory structure can interrupt scan","description":"### Impact\nA directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users.\n\n### Patches\nThis has been fixed in this commit by limiting the recursion to 500 directories:\nhttps://github.com/schokokeksorg/freewvs/commit/83a6b55c0435c69f447488b791555e6078803143\n\nThis issue was discovered by Hanno Böck.","status":"published","published":"2024-08-30T18:43:23Z","modified":"2024-08-30T18:43:25Z","cvss":[{"version":"3.1","score":2.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","level":"low"},{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:38:00.257632Z"}],"nvd":[{"id":"CVE-2020-15101","description":"In freewvs before 0.1.1, a directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users. This has been patched in 0.1.1.","status":"published","published":"2020-07-14T22:15:10.86Z","modified":"2026-06-17T02:56:03.37Z","cvss":[{"version":"3.1","score":2.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400","CWE-674"],"updated_at":"2026-11-02T14:06:09.126752Z"}],"osv":[{"id":"CVE-2020-15101","description":"In freewvs before 0.1.1, a directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users. This has been patched in 0.1.1.","status":"published","published":"2020-07-14T22:15:10.86Z","modified":"2026-10-20T10:51:52.286983876Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-02T15:44:14.418339Z"},{"id":"GHSA-7pmh-vrww-25xx","title":"freewvs's nested directory structure can interrupt scan","description":"### Impact\nA directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users.\n\n### Patches\nThis has been fixed in this commit by limiting the recursion to 500 directories:\nhttps://github.com/schokokeksorg/freewvs/commit/83a6b55c0435c69f447488b791555e6078803143\n\nThis issue was discovered by Hanno Böck.","status":"published","published":"2024-08-30T18:43:23Z","modified":"2026-07-08T06:00:32.335701297Z","cvss":[{"version":"3.1","score":2.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","level":"low"},{"version":"4.0","score":2.4,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"low"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:46:41.349637Z"},{"id":"PYSEC-2020-233","description":"In freewvs before 0.1.1, a directory structure of more than 1000 nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users. This has been patched in 0.1.1.","status":"published","published":"2020-07-14T22:15:00Z","modified":"2023-11-08T04:02:29.245402Z","updated_at":"2026-11-02T15:52:52.192131Z"}]}}