{"id":"CVE-2026-103877","title":"Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API.\n\n\n\nA 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 c…","summary":"Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API.\n\n\n\nA 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 c…","severity":"none","cwe":["CWE-502"],"vendor":"Apache Software Foundation","product":"org.apache.directory.api:api-ldap-schema-data","affected":["org.apache.directory.api:api-ldap-schema-data >= 2.1.0 < 2.1.9"],"published":"2026-10-02","updated":"2026-10-02","sourceUpdated":"2026-10-02T10:17:06.437","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103877","references":[{"url":"https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw","label":"security@apache.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-02T10:15:55.897Z","slug":"CVE-2026-103877","body":"## Overview\n\nDeserialization of Untrusted Data vulnerability in Apache Directory LDAP API.\n\n\n\nA 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. \n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}