CVE-2026-103877

A flaw was found in Apache Directory LDAP API. This vulnerability allows a rogue or compromised LDAP server, or a network attacker performing a man-in-the-middle MitM attack, to execute arbitrary code on the client. During a schema search request, an attacker can return a crafted schema object...

CVE-2026-103885

A flaw was found in Apache Directory LDAP API. This vulnerability allows an attacker to cause a Denial of Service DoS by submitting specially crafted telephone numbers to an LDAP Lightweight Directory Access Protocol server using the library. Processing these malformed inputs causes indefinite CP...

CVE-2026-102731

A flaw was found in Apache Directory LDAP API. A remote unauthenticated attacker or man-in-the-middle actor can trigger this vulnerability by sending a specially crafted Basic Encoding Rules BER encoded message with an excessive size value. This causes the application to allocate an excessive...

CVE-2026-103552

A flaw was found in Apache Directory LDAP API. An unauthenticated remote attacker can cause a Denial of Service DoS by submitting a deeply nested search filter before authenticating binding with the server. Processing this filter triggers a stack overflow in the server decoder, resulting in an...

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-2026-103878

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-2026-103880

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-2026-103877

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...

CVE-2026-103885

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...

CVE-2026-102731

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-2026-91362

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...

CVE-2026-103885

The Apache Directory LDAP API (versions 2.1.0 through 2.1.8 ) contains an Asymmetric Resource Consumption vulnerability. An attacker can cause a Denial of Service (DoS) by submitting specially crafted Telephone Numbers , which leads to indefinite 100% CPU core consumption . This can severely degr...

CVE-2026-103885 Apache Directory LDAP API: Denial of service via crafted telephone number values

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...

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...

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

The Apache Directory LDAP API is vulnerable to a deserialization of untrusted data flaw (CWE-502) in versions 2.1.0 through 2.1.8 . A rogue or compromised LDAP server, or a pre-TLS Man-in-the-Middle (MITM) attacker, can provide a malicious schema object during a loadSchema() subschema search. Thi...

CVE-2026-103880

The Apache Directory LDAP API is vulnerable to an Asymmetric Resource Consumption (CWE-405) issue. When a server supporting the bcrypt algorithm stores a password with a high cost factor (e.g., 30), the server CPU may run for hours during credential verification, potentially leading to a Denial o...

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-2026-103880 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-2026-91378

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:...