{"id":"UBUNTU-CVE-2021-23422","details":"This affects the package bikeshed before 3.0.0. This can occur when an untrusted source file containing Inline Tag Command metadata is processed. When an arbitrary OS command is executed, the command output would be included in the HTML output.","modified":"2026-05-20T16:04:48.575711062Z","published":"2021-08-16T08:15:00Z","upstream":["CVE-2021-23422"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-23422"},{"type":"REPORT","url":"https://snyk.io/vuln/SNYK-PYTHON-BIKESHED-1537646"},{"type":"REPORT","url":"https://github.com/tabatkins/bikeshed/commit/b2f668fca204260b1cad28d5078e93471cb6b2dd"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-23422"}],"affected":[{"package":{"name":"bikeshed","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.53-0ubuntu1","1.60-0ubuntu1","1.61-0ubuntu1","1.62-0ubuntu1","1.65-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.65-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}},{"package":{"name":"bikeshed","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.71-0ubuntu1","1.72-0ubuntu1","1.73-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.73-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}},{"package":{"name":"bikeshed","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.78-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}},{"package":{"name":"bikeshed","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.78-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}},{"package":{"name":"bikeshed","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.78-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}},{"package":{"name":"bikeshed","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.78-0ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}},{"package":{"name":"bikeshed","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/bikeshed?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.78-0ubuntu1","1.78-0ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"bikeshed","binary_version":"1.78-0ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-23422.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}