{"id":"UBUNTU-CVE-2023-26303","details":"Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.","modified":"2025-09-08T16:56:10Z","published":"2023-02-23T00:15:00Z","upstream":["CVE-2023-26303"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-26303"},{"type":"REPORT","url":"https://github.com/executablebooks/markdown-it-py/commit/ae03c6107dfa18e648f6fdd1280f5b89092d5d49"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-26303"}],"affected":[{"package":{"name":"markdown-it-py","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/markdown-it-py@1.1.0-2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0-1","1.1.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-markdown-it","binary_version":"1.1.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-26303.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}