---
id: CVE-2026-88815
title: >-
  DBI versions before 1.654 for Perl incorrectly treat numeric values as strings
  in sql_type_cast_svpv.


  When casting to SQL_NUMERIC, sql_type_cast_svpv passes the string pointer and
  length of the SV to grok_number without stringifying it …
summary: >-
  DBI versions before 1.654 for Perl incorrectly treat numeric values as strings
  in sql_type_cast_svpv.


  When casting to SQL_NUMERIC, sql_type_cast_svpv passes the string pointer and
  length of the SV to grok_number without stringifying it …
severity: none
cwe:
  - CWE-843
product: DBI
affected:
  - DBI < 1.654
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T17:17:52.070'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88815'
references:
  - url: >-
      https://github.com/perl5-dbi/dbi/commit/e5ad87e5602da995d28b4d65df222368b58d6702.patch
    label: 9b29abf9-4ab0-4765-b253-1875cd9b441e
  - url: 'https://github.com/perl5-dbi/dbi/security/advisories/GHSA-c8vq-w3wr-6979'
    label: 9b29abf9-4ab0-4765-b253-1875cd9b441e
  - url: 'https://metacpan.org/release/HMBRAND/DBI-1.654/changes'
    label: 9b29abf9-4ab0-4765-b253-1875cd9b441e
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T17:16:27.817Z'
---

## Overview

DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv.

When casting to SQL_NUMERIC, sql_type_cast_svpv passes the string pointer and length of the SV to grok_number without stringifying it first. An integer (IV) or floating-point (NV) value has no valid string pointer, so grok_number reads from an invalid address, triggering a segmentation fault.

This is reachable in Perl using the sql_type_cast function:

  my $num = 42;
  DBI::sql_type_cast( $num, DBI::SQL_NUMERIC, 0 );

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.