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;
References
Configurations
No configuration.
History
30 Sep 2026, 20:17
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/perl5-dbi/dbi/security/advisories/GHSA-f4qx-mr9m-q2hq - | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
28 Sep 2026, 19:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
28 Sep 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-28 17:17
Updated : 2026-09-30 20:17
NVD link : CVE-2026-88816
Mitre link : CVE-2026-88816
CVE.ORG link : CVE-2026-88816
JSON object : View
Products Affected
No product.
CWE
CWE-843
Access of Resource Using Incompatible Type ('Type Confusion')