CVE-2026-11884 389-ds-base: 389-ds-base: heap buffer overflow in schema objectclass serialization due to missing oc_superior in size calculation

A heap buffer overflow flaw was found in 389 Directory Server. When serializing objectclass definitions, the ocsuperior SUP field length is omitted from buffer size calculations in readschemadse and schemaoctostring, but the field is still written via strcat. An attacker with Directory Manager...

CVE-2026-11884

389 Directory Server suffers a heap buffer overflow in schema objectclass serialization (oc_superior field) due to omitted length in size calculations during read_schema_dse() and schema_oc_to_string(). The SUP field is still written with strcat(), enabling an attacker with Directory Manager priv...