{"id":"CVE-2021-42357","aliases":["GHSA-vv38-4xcj-q4rw"],"url":"https://o3.security/vulnerability/CVE-2021-42357","summary":"Cross-site Scripting in Apache Knox SSO","details":"When using Apache Knox SSO prior to 1.6.1, a request could be crafted to redirect a user to a malicious page due to improper URL parsing. A request that included a specially crafted request parameter could be used to redirect the user to a page controlled by an attacker. This URL would need to be presented to the user outside the normal request flow through a XSS or phishing campaign.","published":"2022-01-17T20:15:07.697Z","modified":"2026-07-09T00:37:25.572540Z","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":0.02579,"percentile":0.83974,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.knox:gateway-service-knoxsso","fixedVersion":"1.6.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/01/17/2"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7j"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:37:25.572540Z"}}