{"id":"UBUNTU-CVE-2026-103877","details":"Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API. A rogue/compromised LDAP server (or pre-TLS MITM) can answer a client's loadSchema() subschema search with a schema object that contains a serialized Java class, allowing some potential RCE. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.","modified":"2026-10-05T13:04:11.953300670Z","published":"2026-10-05T00:00:00Z","upstream":["CVE-2026-103877"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-103877"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-103877"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2026/10/02/5"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2026/10/02/5"}],"affected":[{"package":{"name":"apache-directory-api","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/apache-directory-api?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0~M20-3"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache-directory-api-java","binary_version":"1.0.0~M20-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103877.json"}},{"package":{"name":"apache-directory-api","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache-directory-api?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0~M20-5","1.0.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache-directory-api-java","binary_version":"1.0.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103877.json"}},{"package":{"name":"apache-directory-api","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/apache-directory-api?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache-directory-api-java","binary_version":"1.0.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103877.json"}},{"package":{"name":"apache-directory-api","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/apache-directory-api?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache-directory-api-java","binary_version":"1.0.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103877.json"}},{"package":{"name":"apache-directory-api","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/apache-directory-api?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache-directory-api-java","binary_version":"2.1.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103877.json"}},{"package":{"name":"apache-directory-api","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/apache-directory-api?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.2-2","2.1.2-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libapache-directory-api-java","binary_version":"2.1.2-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103877.json"}}],"schema_version":"1.9.0","severity":[{"type":"Ubuntu","score":"medium"}]}