CVE-2026-103877

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.

Referanslar

• https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw
• http://www.openwall.com/lists/oss-security/2026/10/02/5