{"id":"CVE-2021-41497","aliases":["EUVD-2021-0472","GHSA-74xw-gwfm-7pv7","PYSEC-2021-880"],"status":"published","title":"bounter Null pointer reference","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","severity":{"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","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01071,"percentile":0.65162,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2021-12-17T20:08:52Z","modified":"2026-06-17T04:08:34Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"bounter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.2.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"bounter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.2.0"}]}],"versions":["0.1.0","0.1.1","1.0.1","1.0.1rc1","1.1.0","1.1.1","1.2.0"]}],"products":[{"vendor":"rare-technologies","product":"bounter"}],"references":[{"url":"https://github.com/RaRe-Technologies/bounter/issues/47","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","web","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41497","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/bounter/PYSEC-2021-880.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-74xw-gwfm-7pv7","tags":["advisory"]},{"url":"https://github.com/RaRe-Technologies/bounter","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-41497","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","status":"published","published":"2021-12-17T20:08:52Z","modified":"2024-08-04T03:15:28.04Z","updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2021-0472","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","status":"published","published":"2021-12-17T20:08:52Z","modified":"2024-08-04T03:15:28Z","updated_at":"2026-11-03T03:24:17.663217Z"}],"ghsa":[{"id":"GHSA-74xw-gwfm-7pv7","title":"bounter Null pointer reference","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","status":"published","published":"2021-12-18T00:00:40Z","modified":"2024-11-21T22:18:18Z","cvss":[{"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"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:38:21.777721Z"}],"nvd":[{"id":"CVE-2021-41497","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","status":"published","published":"2021-12-17T21:15:07.663Z","modified":"2026-06-17T04:08:34.137Z","cvss":[{"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"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:02.566991Z"}],"osv":[{"id":"GHSA-74xw-gwfm-7pv7","title":"bounter Null pointer reference","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","status":"published","published":"2021-12-18T00:00:40Z","modified":"2024-11-22T05:12:10.106434Z","cvss":[{"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"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:46:40.657155Z"},{"id":"PYSEC-2021-880","description":"Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.","status":"withdrawn","published":"2021-12-17T21:15:00Z","modified":"2026-06-10T17:00:38.539578484Z","cvss":[{"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"}],"updated_at":"2026-11-02T15:52:53.449407Z"}]}}