`mariadb` was a malicious module published with the intent to hijack environment variables. It has been unpublished by npm.

mariadb: Replication in sql/event_data_objects.cc occurs before ACL checks

sql/event_data_objects.cc in MariaDB before 10.1.30 and 10.2.x before 10.2.10 and Percona XtraDB Cluster before 5.6.37-26.21-3 and 5.7.x before 5.7.19-29.22-3 allows remote authenticated users with SQL access to bypass intended access restrictions and replicate data definition language (DDL) statements to cluster nodes by leveraging incorrect ordering of DDL replication and ACL checking.

pcre: heap buffer over-read in pcre_compile2() (8.37/23)

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

pcre: heap buffer overflow in compile_branch()

The compile_branch function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code, cause a denial of service (out-of-bounds heap read and crash), or possibly have other unspecified impact via a regular expression with a group containing a forward reference repeated a large number of times within a repeated outer group that has a zero minimum quantifier.