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.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Deferred - security@apache.org
- Published
- 2026-10-02
- Last modified
- 2026-10-07
- Weaknesses
- CWE-502
Affected products
References
- https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw
- http://www.openwall.com/lists/oss-security/2026/10/02/5