{"cve":"CVE-2021-42357","nvd":{"published":"2022-01-17T20:15:07.697","modified":"2026-06-17T04:09:40.963","status":"Modified","description":"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.","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-79"],"references":["http://www.openwall.com/lists/oss-security/2022/01/17/2","https://lists.apache.org/thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7j","http://www.openwall.com/lists/oss-security/2022/01/17/2","https://lists.apache.org/thread/b7v5dkpyqb51nw0lvz4cybhgrfhk1g7j"],"products":["apache:knox"],"source":"nvd","synced_at":"2026-10-19T21:27:20.926095847+00:00"},"epss":{"cve":"CVE-2021-42357","score":0.02579,"percentile":0.85215,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-vv38-4xcj-q4rw","url":"https://osv.dev/vulnerability/GHSA-vv38-4xcj-q4rw","summary":"Cross-site Scripting in Apache Knox SSO","modified":"2023-11-08T04:07:05.836680Z","packages":[{"ecosystem":"Maven","name":"org.apache.knox:gateway-service-knoxsso","purl":"pkg:maven/org.apache.knox/gateway-service-knoxsso","ranges":["<1.6.1"],"fixed":["1.6.1"]}]}],"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."]}