{"id":"UBUNTU-CVE-2020-25032","details":"An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.","modified":"2026-02-04T03:28:18.584445Z","published":"2020-08-31T04:15:00Z","related":["USN-6019-1"],"upstream":["CVE-2020-25032"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-25032"},{"type":"REPORT","url":"https://github.com/corydolphin/flask-cors/commit/67c4b2cc98ae87cf1fa7df4f97fd81b40c79b895"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6019-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-25032"}],"affected":[{"package":{"name":"python-flask-cors","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-flask-cors@3.0.8-2ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.8-2ubuntu0.1"}]}],"versions":["3.0.8-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python3-flask-cors","binary_version":"3.0.8-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25032.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}