{"id":"CVE-2020-29565","aliases":["GHSA-f8fh-xp28-q59m","PYSEC-2020-45"],"url":"https://o3.security/vulnerability/CVE-2020-29565","summary":"OpenStack Horizon Open redirect in workflow forms","details":"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":"2020-12-04T08:15:11.143Z","modified":"2026-07-08T05:56:41.770482885Z","cvss":{"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"},"epss":{"score":0.01429,"percentile":0.71708,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"horizon","fixedVersion":"15.3.2"},{"ecosystem":"PyPI","name":"horizon","fixedVersion":"16.2.1"},{"ecosystem":"PyPI","name":"horizon","fixedVersion":"18.3.3"},{"ecosystem":"PyPI","name":"horizon","fixedVersion":"18.6.0"}],"fix":{"url":"https://github.com/openstack/horizon/commit/252467100f75587e18df9c43ed5802ee8f0017fa","label":"openstack/horizon@2524671"},"references":[{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4820"},{"type":"REPORT","url":"https://bugs.launchpad.net/horizon/+bug/1865026"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2020/12/08/2"},{"type":"FIX","url":"https://review.opendev.org/c/openstack/horizon/+/758841/"},{"type":"FIX","url":"https://review.opendev.org/c/openstack/horizon/+/758843/"},{"type":"FIX","url":"https://security.openstack.org/ossa/OSSA-2020-008.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29565"},{"type":"WEB","url":"https://github.com/openstack/horizon/commit/252467100f75587e18df9c43ed5802ee8f0017fa"},{"type":"WEB","url":"https://github.com/openstack/horizon/commit/6c208edf323ced07b15ec4bc3879bddb91d398bc"},{"type":"WEB","url":"https://github.com/openstack/horizon/commit/9e0e333ab5277b6c396f602862ff90398cb0242b"},{"type":"WEB","url":"https://github.com/openstack/horizon/commit/baa370f84332ad41502daea29a551705696f4421"},{"type":"PACKAGE","url":"https://github.com/openstack/horizon"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/horizon/PYSEC-2020-45.yaml"},{"type":"WEB","url":"https://review.opendev.org/c/openstack/horizon/+/758841"},{"type":"WEB","url":"https://review.opendev.org/c/openstack/horizon/+/758843"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:56:41.770482885Z"}}