{"id":"CVE-2020-29565","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-29565","generatedAt":"2026-10-27T23:43:02.758Z","title":"There is a lack of validation of the \"next\" parameter, which would allow someone to supply a malicious URL in Horizon that can cause an automatic redirect to the provided malicious URL.","description":"An issue was discovered in OpenStack Horizon before 15.3.2, 16.x before 16.2.1, 17.x and 18.x before 18.3.3, 18.4.x, and 18.5.x. There is a lack of validation of the \"next\" parameter, which would allow someone to supply a malicious URL in Horizon that can cause an automatic redirect to the provided malicious URL.","published":"2020-12-04T08:15:11.000Z","lastModified":"2026-06-17T03:11:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-601"],"affected":["openstack/horizon","debian/debian linux"],"epss":{"score":0.01429,"percentile":0.72808,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.43%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2020/12/08/2","tags":["Mailing List","Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://bugs.launchpad.net/horizon/+bug/1865026","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://review.opendev.org/c/openstack/horizon/+/758841/","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://review.opendev.org/c/openstack/horizon/+/758843/","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://security.openstack.org/ossa/OSSA-2020-008.html","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2020/dsa-4820","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2020/12/08/2","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.launchpad.net/horizon/+bug/1865026","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://review.opendev.org/c/openstack/horizon/+/758841/","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://review.opendev.org/c/openstack/horizon/+/758843/","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.openstack.org/ossa/OSSA-2020-008.html","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4820","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-29565","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}