---
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: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-843
vendor: Red Hat
product: DBI
affected:
  - DBI < 1.654
published: '2026-09-28'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T20:17:35.380'
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
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/28/12'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/perl5-dbi/dbi/security/advisories/GHSA-c8vq-w3wr-6979'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88815.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-88815'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2542559'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-88815'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88815'
  - url: 'https://access.redhat.com/errata/RHSA-2026:76762'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-30T19:52:26.167139Z'
epss: 0.00202
epssPercentile: 0.10088
scores:
  nvd: 6.2
  vendor: 7.5
ingestedAt: '2026-09-28T17:16:27.817Z'
patched:
  - enterprise_linux_appstream_v_10
---

## 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.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88815.json)
- **RHSA-2026:76762** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-10-06 · [advisory](https://access.redhat.com/errata/RHSA-2026:76762)