{"id":"UBUNTU-CVE-2020-16156","details":"CPAN 2.28 allows Signature Verification Bypass.","modified":"2026-04-22T12:31:12.457106Z","published":"2021-12-13T18:15:00Z","related":["USN-5689-1","USN-5689-2"],"upstream":["CVE-2020-16156"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-16156"},{"type":"REPORT","url":"https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/"},{"type":"REPORT","url":"http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5689-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5689-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-16156"}],"affected":[{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.7+esm4?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.2-2ubuntu1.7+esm4"}]}],"versions":["5.14.2-21build1","5.18.1-4","5.18.1-4build1","5.18.1-5","5.18.2-2","5.18.2-2ubuntu1","5.18.2-2ubuntu1.1","5.18.2-2ubuntu1.3","5.18.2-2ubuntu1.4","5.18.2-2ubuntu1.6","5.18.2-2ubuntu1.7","5.18.2-2ubuntu1.7+esm3"],"ecosystem_specific":{"availability":"Available 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