https://vulnerability.cert.dk/rss/recent/all/10 Most recent entries from all 2025-08-21T14:46:17.909208+00:00 Vulnerability-Lookup cert@cert.dk python-feedgen Contains only the most 10 recent entries. https://vulnerability.cert.dk/vuln/cve-2021-21939 cve-2021-21939 2025-08-21T14:46:17.916914+00:00