{"cve":"CVE-2021-31522","nvd":{"published":"2022-01-06T13:15:08.027","modified":"2026-06-17T03:51:57.340","status":"Modified","description":"Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-470"],"references":["http://www.openwall.com/lists/oss-security/2022/01/06/4","https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw","http://www.openwall.com/lists/oss-security/2022/01/06/4","https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw"],"products":["apache:kylin"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-31522","score":0.02998,"percentile":0.87355,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q656-g2x3-8cgh","url":"https://osv.dev/vulnerability/GHSA-q656-g2x3-8cgh","summary":"Kylin can receive user input and load any class through Class.forName(...).","modified":"2024-12-04T05:48:28.226118Z","packages":[{"ecosystem":"Maven","name":"org.apache.kylin:kylin","purl":"pkg:maven/org.apache.kylin/kylin","ranges":["<3.1.3"],"fixed":["3.1.3"]},{"ecosystem":"Maven","name":"org.apache.kylin:kylin","purl":"pkg:maven/org.apache.kylin/kylin","ranges":[">=4.0.0 <4.0.1"],"fixed":["4.0.1"]}]}],"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."]}