Vulnerability 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.
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw
- http://www.openwall.com/lists/oss-security/2026/10/02/5
FAQ
What is CVE-2026-103877?
CVE-2026-103877 is a documented vulnerability. 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 obj...
How severe is CVE-2026-103877?
CVSS scoring is not yet available for CVE-2026-103877. Check NVD for updates.
Is there a patch for CVE-2026-103877?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.