Severity: critical Affected versions:
- Apache Directory LDAP API 2.1.0 before 2.1.9 Description: 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. Credit: Claude Security (tool) The Apache Software Foundation (finder) References: https://directory.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-103877
