{"api_version":"1","generated_at":"2026-09-20T07:36:48+00:00","cve":"CVE-2026-78030","urls":{"html":"https://cve.report/CVE-2026-78030","api":"https://cve.report/api/cve/CVE-2026-78030.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-78030","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-78030"},"summary":{"title":"DBI versions before 1.653 for Perl load arbitrary modules via unvalidated dbm_type and dbm_mldbm attributes in DBD::DBM","description":"DBI versions before 1.653 for Perl load arbitrary modules via unvalidated dbm_type and dbm_mldbm attributes in DBD::DBM.\n\nDBD::DBM passes the dbm_type and dbm_mldbm connect attributes to require without checking that the value names a module. require treats a path-shaped string as a literal filename and does not consult @INC, so the attribute chooses the file that Perl loads and runs.\n\nThe MLDBM::Serializer:: prefix that DBD::DBM prepends to dbm_mldbm is not a boundary: only the :: separators are rewritten to /, so a value containing / traverses out of the serializer directory. The value is also assigned to $MLDBM::Serializer, which MLDBM requires the same way when it ties the table.\n\nA caller that lets an untrusted party influence either attribute, for example through a DSN fragment or a parameter that selects a storage backend, runs the file-scope code of whatever module the value names.\n\nFor example,\n\n    my $dsn = \"dbi:DBM:f_dir=/var/db;dbm_type=../../Untrusted.pm\"\n    my $dbh = DBI->connect( $dsn );\n\nNote that DBD::Gofer forwards connect attributes to the server side, and DBI::ProxyServer checks only that a DSN starts with a driver prefix.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-09-19 11:16:37","updated_at":"2026-09-20 01:16:30"},"problem_types":["CWE-470","CWE-470 CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe 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The value is also assigned to $MLDBM::Serializer, which MLDBM requires the same way when it ties the table.\n\nA caller that lets an untrusted party influence either attribute, for example through a DSN fragment or a parameter that selects a storage backend, runs the file-scope code of whatever module the value names.\n\nFor example,\n\n    my $dsn = \"dbi:DBM:f_dir=/var/db;dbm_type=../../Untrusted.pm\"\n    my $dbh = DBI->connect( $dsn );\n\nNote that DBD::Gofer forwards connect attributes to the server side, and DBI::ProxyServer checks only that a DSN starts with a driver prefix.","Type":"Description","Title":"DBI versions before 1.653 for Perl load arbitrary modules via un"}]}}}