{"id":"CVE-2020-17531","details":"A Java Serialization vulnerability was found in Apache Tapestry 4. Apache Tapestry 4 will attempt to deserialize the \"sp\" parameter even before invoking the page's validate method, leading to deserialization without authentication. Apache Tapestry 4 reached end of life in 2008 and no update to address this issue will be released. Apache Tapestry 5 versions are not vulnerable to this issue. Users of Apache Tapestry 4 should upgrade to the latest Apache Tapestry 5 version.","aliases":["GHSA-c566-2grg-mjwg"],"modified":"2026-04-02T04:10:13.564454Z","published":"2020-12-08T13:15:13.010Z","references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/12/02/1"},{"type":"ADVISORY","url":"https://lists.apache.org/thread.html/r700a6aa234dbff0555d4187bdc8274d7e4c0afbf35b9a3457f09ee76%40%3Cusers.tapestry.apache.org%3E"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210115-0007/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/tapestry-5","events":[{"introduced":"0"},{"fixed":"5ea0235557c789d0e31c6a97885be9ea1f0101a9"}],"database_specific":{"versions":[{"introduced":"4.0.0"},{"fixed":"5.0.1"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17531.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}