High 7.5Published Sep 28, 2026

CVE-2026-88816DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in FetchHashKeyName

Updated under an hour ago (2026-10-19 10:00 UTC)

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EPSS puts the chance of exploitation in the next 30 days at 0.62%, higher than 48% of scored CVEs.

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Exploited in the last 30 days

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;

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-843
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.62% (percentile 48)
Assigned by: CPANSec
NVD analysis: Deferred
Record last updated: Sep 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

No affected products are listed yet.

References

https://github.com/perl5-dbi/dbi/security/advisories/GHSA-f4qx-mr9m-q2hqvendor-advisory
https://github.com/perl5-dbi/dbi/commit/70962570212dc60a5428098cf2a0462ad5945851.patchpatch
https://metacpan.org/release/HMBRAND/DBI-1.654/changesrelease-notes
http://www.openwall.com/lists/oss-security/2026/09/28/13

The CVE record on cve.org NVD's entry

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