{"id":"CVE-2021-23423","aliases":["EUVD-2021-0034","GHSA-hf6p-4rv2-9qrp","PYSEC-2021-117","SNYK-PYTHON-BIKESHED-1537647","UBUNTU-CVE-2021-23423"],"status":"published","title":"Directory Traversal","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01106,"percentile":0.66272,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2021-08-16T07:55:09Z","modified":"2026-10-20T10:53:43Z","fixes":[{"ecosystem":"PyPI","package":"bikeshed","fixed_in":["3.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.0"}]}],"versions":["1.0.0","1.0.1","1.0.10","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9","1.1.0","1.2.0","1.2.1","1.2.2","1.3.0","1.4.0","1.4.1","1.4.2","1.4.3","1.4.4","1.5.0","1.5.1","1.5.2","1.5.3","1.6.0","1.6.1","1.6.2","1.6.3","1.7.0","2.0.0","2.1.0","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7"]},{"source":"osv","ecosystem":"PyPI","package":"bikeshed","ranges":[{"type":"GIT","events":[{"introduced":"0"},{"fixed":"b2f668fca204260b1cad28d5078e93471cb6b2dd"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.0"}]}],"versions":["1.0.0","1.0.1","1.0.10","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9","1.1.0","1.2.0","1.2.1","1.2.2","1.3.0","1.4.0","1.4.1","1.4.2","1.4.3","1.4.4","1.5.0","1.5.1","1.5.2","1.5.3","1.6.0","1.6.1","1.6.2","1.6.3","1.7.0","2.0.0","2.1.0","2.2.0","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.6","2.4.7"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.53-0ubuntu1","1.60-0ubuntu1","1.61-0ubuntu1","1.62-0ubuntu1","1.65-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.71-0ubuntu1","1.72-0ubuntu1","1.73-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"bikeshed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1","1.78-0ubuntu2"]}],"products":[{"vendor":"bikeshed_project","product":"bikeshed"}],"references":[{"url":"https://snyk.io/vuln/SNYK-PYTHON-BIKESHED-1537647","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","fix","web","advisory","report"]},{"url":"https://github.com/tabatkins/bikeshed/commit/b2f668fca204260b1cad28d5078e93471cb6b2dd","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23423","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/bikeshed/PYSEC-2021-117.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hf6p-4rv2-9qrp","tags":["advisory"]},{"url":"https://github.com/tabatkins/bikeshed","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-23423","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-23423","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-23423","title":"Directory Traversal","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-16T07:55:09.998Z","modified":"2024-09-17T02:52:59.989Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-0034","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-16T07:55:09Z","modified":"2024-09-17T02:52:59Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:28:36.484067Z"}],"ghsa":[{"id":"GHSA-hf6p-4rv2-9qrp","title":"Path Traversal in bikshed","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-30T16:25:42Z","modified":"2024-09-04T21:13:34Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:38:01.080229Z"}],"nvd":[{"id":"CVE-2021-23423","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-16T08:15:11.393Z","modified":"2026-06-17T03:38:44.173Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","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:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:06:56.943671Z"}],"osv":[{"id":"CVE-2021-23423","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-16T08:15:11.393Z","modified":"2026-10-20T10:53:43.878828845Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:18.367807Z"},{"id":"GHSA-hf6p-4rv2-9qrp","title":"Path Traversal in bikshed","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-30T16:25:42Z","modified":"2024-09-04T21:24:04.703962Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:48.920784Z"},{"id":"UBUNTU-CVE-2021-23423","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-16T08:15:00Z","modified":"2026-10-17T12:56:19.678742394Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:26.779273Z"},{"id":"PYSEC-2021-117","description":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing include, include-code or include-raw block is processed. The contents of arbitrary files could be disclosed in the HTML output.","status":"published","published":"2021-08-16T08:15:00Z","modified":"2023-11-08T04:05:08.804375Z","updated_at":"2026-11-02T15:52:52.682031Z"}]}}