Unrated severityNVD Advisory· Published Oct 2, 2026

CVE-2026-103877

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.

Affected products

Apache/Directory LDAP APIllm-fuzzy
Range: from 2.1.0 before 2.1.9

Patches

Vulnerability mechanics

References

lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvwnvd

News mentions

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