======================================================================== CVE-2026-88816 CPAN Security Group ========================================================================
CVE ID: CVE-2026-88816 Distribution: DBI Versions: before 1.654 MetaCPAN: https://metacpan.org/dist/DBI VCS Repo: https://github.com/perl5-dbi/dbi DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in FetchHashKeyName Description ----------- DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in FetchHashKeyName. fetchrow_hashref uses the string pointer of the FetchHashKeyName attribute as the key name without stringifying it first. When FetchHashKeyName has been set to an integer (IV) or floating-point (NV) value, that pointer is invalid, so reading the key name triggers a segmentation fault. This can be triggered with the following code: my $dbh = DBI->connect( "dbi:ExampleP:", "", "", { RaiseError => 0, PrintError => 0 } ); $dbh->{FetchHashKeyName} = 42; my $sth = $dbh->prepare("select mode, size, name from ."); $sth->execute; $sth->fetchrow_hashref; Problem types ------------- - CWE-843 Access of Resource Using Incompatible Type ('Type Confusion') Solutions --------- Upgrade to DBI 1.654 or later. References ---------- https://github.com/perl5-dbi/dbi/security/advisories/GHSA-f4qx-mr9m-q2hq https://github.com/perl5-dbi/dbi/commit/70962570212dc60a5428098cf2a0462ad5945851.patch https://metacpan.org/release/HMBRAND/DBI-1.654/changes Credits ------- Harsh Raj Singhania, finder
