{"id":"UBUNTU-CVE-2026-88920","details":"An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages via a crafted unsigned SAML sender-vouches assertion containing an attacker-controlled key. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.","modified":"2026-10-02T22:30:33.203275691Z","published":"2026-10-02T00:00:00Z","upstream":["CVE-2026-88920"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-88920"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-88920"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/grt43m3bgbzz0mk0cnho3rcybb1j01z9"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2026/09/30/10"}],"affected":[{"package":{"name":"wss4j","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/wss4j?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.15-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libwss4j-java","binary_version":"1.6.15-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88920.json"}},{"package":{"name":"wss4j","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/wss4j?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.19-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.19-1","binary_name":"libwss4j-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88920.json"}},{"package":{"name":"wss4j","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/wss4j?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.19-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libwss4j-java","binary_version":"1.6.19-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88920.json"}},{"package":{"name":"wss4j","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/wss4j?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.19-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libwss4j-java","binary_version":"1.6.19-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88920.json"}},{"package":{"name":"wss4j","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/wss4j?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.19-3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.19-3","binary_name":"libwss4j-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88920.json"}},{"package":{"name":"wss4j","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/wss4j?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.19-4","1.6.19-4build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libwss4j-java","binary_version":"1.6.19-4build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88920.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}