Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.5.19 and earlier allows remote authenticated users to affect availability via unknown vectors related to Server Optimizer.

Multiple format string vulnerabilities in the dispatch_command function in libmysqld/sql_parse.cc in mysqld in MySQL 4.0.0 through 5.0.83 allow remote authenticated users to cause a denial of service (daemon crash) and possibly have unspecified other impact via format string specifiers in a database name in a (1) COM_CREATE_DB or (2) COM_DROP_DB request. NOTE: some of these details are obtained from third party information.

MySQL before 4.1.13 allows local users to cause a denial of service (persistent replication slave crash) via a query with multiupdate and subselects.

MySQL before 4.1.21, 5.0 before 5.0.25, and 5.1 before 5.1.12, when run on case-sensitive filesystems, allows remote authenticated users to create or access a database when the database name differs only in case from a database for which they have permissions.

MySQL 4.1 before 4.1.21 and 5.0 before 5.0.24 allows a local user to access a table through a previously created MERGE table, even after the user's privileges are revoked for the original table, which might violate intended security policy.

Format string vulnerability in time.cc in MySQL Server 4.1 before 4.1.21 and 5.0 before 1 April 2006 allows remote authenticated users to cause a denial of service (crash) via a format string instead of a date as the first parameter to the date_format function, which is later used in a formatted print call to display the error message.

mysqld in MySQL 4.1.x before 4.1.18, 5.0.x before 5.0.19, and 5.1.x before 5.1.6 allows remote authorized users to cause a denial of service (crash) via a NULL second argument to the str_to_date function.

SQL injection vulnerability in MySQL 4.1.x before 4.1.20 and 5.0.x before 5.0.22 allows context-dependent attackers to execute arbitrary SQL commands via crafted multibyte encodings in character sets such as SJIS, BIG5, and GBK, which are not properly handled when the mysql_real_escape function is used to escape the input.

sql_parse.cc in MySQL 4.0.x up to 4.0.26, 4.1.x up to 4.1.18, and 5.0.x up to 5.0.20 allows remote attackers to obtain sensitive information via a COM_TABLE_DUMP request with an incorrect packet length, which includes portions of memory in an error message.