{"cve":"CVE-2020-29565","nvd":{"published":"2020-12-04T08:15:11.143","modified":"2026-06-17T03:11:26.443","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-601"],"references":["http://www.openwall.com/lists/oss-security/2020/12/08/2","https://bugs.launchpad.net/horizon/+bug/1865026","https://review.opendev.org/c/openstack/horizon/+/758841/","https://review.opendev.org/c/openstack/horizon/+/758843/","https://security.openstack.org/ossa/OSSA-2020-008.html"],"products":["debian:debian_linux","openstack:horizon"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-29565","score":0.01429,"percentile":0.73,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-f8fh-xp28-q59m","url":"https://osv.dev/vulnerability/GHSA-f8fh-xp28-q59m","summary":"OpenStack Horizon Open redirect in workflow forms","modified":"2024-09-20T22:01:39.240867Z","packages":[{"ecosystem":"PyPI","name":"horizon","purl":"pkg:pypi/horizon","ranges":["<15.3.2"],"fixed":["15.3.2"]},{"ecosystem":"PyPI","name":"horizon","purl":"pkg:pypi/horizon","ranges":[">=16.0.0 <16.2.1"],"fixed":["16.2.1"]},{"ecosystem":"PyPI","name":"horizon","purl":"pkg:pypi/horizon","ranges":[">=17.0.0 <18.3.3"],"fixed":["18.3.3"]},{"ecosystem":"PyPI","name":"horizon","purl":"pkg:pypi/horizon","ranges":[">=18.4.0 <18.6.0"],"fixed":["18.6.0"]}]},{"id":"PYSEC-2020-45","url":"https://osv.dev/vulnerability/PYSEC-2020-45","summary":"","modified":"2026-06-10T17:01:51.264142559Z","packages":[{"ecosystem":"PyPI","name":"horizon","purl":"pkg:pypi/horizon","ranges":[">=15.3.0 <15.3.2",">=16.0.0 <16.2.1",">=17.0.0 <18.3.3",">=18.4.0 <18.6.0"],"fixed":["15.3.2","16.2.1","18.3.3","18.6.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}