CVE-2026-103878

Summary

The vulnerability allows attackers to intercept sensitive LDAP data transmitted in cleartext before TLS encryption is fully established. This occurs when a StartTLS operation begins after a Search request, leaving data exposed during the transition period.

Exploitability

Exploitation requires an attacker to be positioned between client and server during LDAP communication, with minimal preconditions needed beyond network access.

Blast radius

The impact could affect multiple LDAP clients and servers that use Apache Directory LDAP API versions 2.1.0 through 2.1.8, potentially exposing authentication credentials and directory data.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade to version 2.1.9 which fixes the cleartext transmission issue in Apache Directory LDAP API.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.