EUVD-2026-91361

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...

CVE-2026-103877 Apache Directory LDAP API: Unsafe loading of Java code from LDAP schema elements

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...

CVE-2026-103880

The Apache Directory LDAP API is vulnerable to an Asymmetric Resource Consumption (CWE-405) vulnerability. When storing a password using the bcrypt algorithm with a high cost factor (e.g., 30), the server CPU can be forced to run for hours while checking credentials, leading to a Denial of Servic...

CVE-2026-103880 Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. Storing a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to run for hours checking the credentials. A bounded cost should be enforced...

CVE-2026-103880 Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. Storing a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to run for hours checking the credentials. A bounded cost should be enforced...

EUVD-2026-91359

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. Storing a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to run for hours checking the credentials. A bounded cost should be enforced...

CVE-2026-103878 Apache Directory LDAP API: Injection of plaintext responses during StartTLS

Cleartext transmission of sensitive information vulnerability in Apache Directory LDAP API. A StartTLS extended operation started after a Search request has been sent can lead to receive data in plain text before the TLS Handshake has been completed. This issue affects Apache Directory LDAP API:...

CVE-2026-103878

The Apache Directory LDAP API versions 2.1.0 through 2.1.8 are vulnerable to a cleartext transmission of sensitive information. The root cause involves a StartTLS extended operation initiated after a Search request has been sent, which can result in data being received in plain text before the TL...

CVE-2026-103878 Apache Directory LDAP API: Injection of plaintext responses during StartTLS

Cleartext transmission of sensitive information vulnerability in Apache Directory LDAP API. A StartTLS extended operation started after a Search request has been sent can lead to receive data in plain text before the TLS Handshake has been completed. This issue affects Apache Directory LDAP API:...

EUVD-2026-91378

Cleartext transmission of sensitive information vulnerability in Apache Directory LDAP API. A StartTLS extended operation started after a Search request has been sent can lead to receive data in plain text before the TLS Handshake has been completed. This issue affects Apache Directory LDAP API:...

CVE-2026-103552 Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder

Stack Overflow vulnerability in Apache Directory LDAP API. Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder. This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9. Users are recommended to upgrade to version 1.2.9,...

CVE-2026-103552

Stack Overflow vulnerability in Apache Directory LDAP API. Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder. This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9. Users are recommended to upgrade to version 1.2.9,...

CVE-2026-103552

A Stack Overflow vulnerability exists in the Apache Directory LDAP API (versions 1.2.0 to before 1.2.9). An unauthenticated remote attacker can trigger this by submitting a deeply nested search filter before binding with the server. The flaw occurs in the server's decoder, which can lead to an ap...

CVE-2026-103552 Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder

Stack Overflow vulnerability in Apache Directory LDAP API. Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder. This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9. Users are recommended to upgrade to version 1.2.9,...

EUVD-2026-91382

Stack Overflow vulnerability in Apache Directory LDAP API. Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder. This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9. Users are recommended to upgrade to version 1.2.9,...

CVE-2026-102731

The Apache Directory LDAP API (versions 1.2.0 before 1.2.9 ) is vulnerable to a memory allocation flaw caused by an excessive size value during BER decoding . A malicious peer or Man-in-the-Middle (MITM) actor can send a small BER-encoded response that triggers a large memory allocation before da...

CVE-2026-102731 Apache Directory LDAP API: Denial of service via excessive memory allocation in BER decode

Memory allocation with excessive size value vulnerability in Apache Directory LDAP API. A malicious peer or a MITM can send a small BER-encoded response causing a large memory allocation before any data is received. This can lead to an OutOfMemoryError and denial of service. The client JVM OOMs...

CVE-2026-102731 Apache Directory LDAP API: Denial of service via excessive memory allocation in BER decode

Memory allocation with excessive size value vulnerability in Apache Directory LDAP API. A malicious peer or a MITM can send a small BER-encoded response causing a large memory allocation before any data is received. This can lead to an OutOfMemoryError and denial of service. The client JVM OOMs...

EUVD-2026-91333

Memory allocation with excessive size value vulnerability in Apache Directory LDAP API. A malicious peer or a MITM can send a small BER-encoded response causing a large memory allocation before any data is received. This can lead to an OutOfMemoryError and denial of service. The client JVM OOMs...

CVE-2026-103885: Undefined Security Weakness

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. A LDAP server using the LDAP API like Apache DS may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. User...