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Fencer Vulns
critical 9.8

CVE-2026-15043 json

DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted <= and >= SQL operators on text

published 2026-07-14 3 mo ago modified 2026-10-24 15 d ago also EUVD-2026-43654

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted <= and >= SQL operators on text.

DBI::SQL::Nano, DBI's built-in mini-SQL engine, evaluated WHERE predicates incorrectly in some cases. In the non-numeric string branch of the is_matched method, <= was evaluated using Perl's ge operator, and >= was evaluated using Perl's le operator.

SQL::Nano is the fallback query engine for DBI's file-backed drivers (DBD::File, DBD::DBM, CSV-style drivers) whenever SQL::Statement is not installed, and is forced whenever DBI_SQL_NANO=1. Queries over such tables use these predicates directly.

The impact depends on the context. Where an application relies on a WHERE clause to filter file-backed data for policy or authorization, an inverted <=/>= comparison silently returns the wrong rows.

Patch / fix

  • HMBRAND DBI::SQL::Nano 1.651
  • libdbi-perl Debian 12 1.643-4+deb12u2
  • libdbi-perl Debian 13 1.652-2~deb13u1
  • libdbi-perl Debian 14 1.651-1

debian advisories DEBIAN-CVE-2026-15043

  • perl-DBI SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 1.647.0-150600.12.18.1
  • perl-DBI SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.642-150200.3.19.1
  • perl-DBI SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.647.0-160000.5.1
  • perl-DBI SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.628-5.21.1

suse advisories SUSE-SU-2026:3461-1SUSE-SU-2026:3415-1SUSE-SU-2026:3283-1SUSE-SU-2026:22845-1SUSE-SU-2026:22926-1

  • perl-DBI openSUSE Leap 16.0 1.647.0-160000.5.1
  • perl-DBI openSUSE Tumbleweed 1.651.0-1.1

opensuse advisories openSUSE-SU-2026:21412-1openSUSE-SU-2026:11298-1

  • perl-dbi Alpine 3.24 1.651-r0

alpine advisories ALPINE-CVE-2026-15043

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • perl-DBI Azure Linux 3.0 1.651-1

azure linux advisories AZL-92418

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-15043 updated cvss 4.3

DBI::SQL::Nano: DBI::SQL::Nano: Incorrect SQL operator evaluation can lead to incorrect data filtering.

  • Red Hat Enterprise Linux 6 perl-DBI Red Hat Enterprise Linux 7 perl-DBI
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 perl-DBI Red Hat Enterprise Linux 9 perl-DBI Red Hat Enterprise Linux 10 perl-DBI
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
3 mo ago

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • HMBRAND DBI::SQL::Nano

Classification

Weakness
  • CWE-480 Use of Incorrect Operator

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.