DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv (CVE-2026-88815) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-88815

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

Answer in brief

CVE-2026-88815 records a Unknown severity vulnerability in DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv. The current sources do not mark it as known exploited. The current feed maps DBI (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 28, 2026Updated Sep 28, 2026Source checked Sep 28, 2026First seen by HOL Sep 28, 2026Material review Sep 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps DBI (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
DBIgeneric	>=0 <1.654	1.654

Recommended response

Check inventory. Check lockfiles and deployed manifests for DBI.
Review the reported fix. Source-reported solution: Upgrade to DBI 1.654 or later.

Evidence timeline and material changes

Published upstream
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 28, 2026

Sources and claim methodology

Upstream source description

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 );

Quoted source text, attributed separately from HOL analysis.