{"id":"USN-4885-1","summary":"pygments vulnerability","details":"It was discovered that Pygments incorrectly handled parsing SML files. If a\nuser or automated system were tricked into parsing a specially crafted SML\nfile, a remote attacker could cause Pygments to hang, resulting in a denial\nof service.\n","modified":"2026-02-10T04:42:07Z","published":"2021-03-22T13:26:06Z","related":["UBUNTU-CVE-2021-20270"],"upstream":["CVE-2021-20270","UBUNTU-CVE-2021-20270"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4885-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20270"}],"affected":[{"package":{"name":"pygments","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pygments@2.1+dfsg-1ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1+dfsg-1ubuntu0.1"}]}],"versions":["2.0.1+dfsg-1.1svn1","2.0.1+dfsg-1.1ubuntu1","2.1+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pygments","binary_version":"2.1+dfsg-1ubuntu0.1"},{"binary_name":"python3-pygments","binary_version":"2.1+dfsg-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4885-1.json","cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"id":"CVE-2021-20270","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"pygments","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pygments@2.2.0+dfsg-1ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0+dfsg-1ubuntu0.1"}]}],"versions":["2.2.0+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pygments","binary_version":"2.2.0+dfsg-1ubuntu0.1"},{"binary_name":"python3-pygments","binary_version":"2.2.0+dfsg-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4885-1.json","cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"id":"CVE-2021-20270","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}},{"package":{"name":"pygments","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pygments@2.3.1+dfsg-1ubuntu2.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1+dfsg-1ubuntu2.1"}]}],"versions":["2.3.1+dfsg-1ubuntu1","2.3.1+dfsg-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pygments","binary_version":"2.3.1+dfsg-1ubuntu2.1"},{"binary_name":"python3-pygments","binary_version":"2.3.1+dfsg-1ubuntu2.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4885-1.json","cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"id":"CVE-2021-20270","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}]}}}],"schema_version":"1.7.3"}