ubuntu-cve-2026-15043
Vulnerability from osv_ubuntu
Published
2026-07-14 10:16
Modified
2026-07-14 10:16
Summary
Details

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.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.630-1ubuntu0.1~esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.630-1ubuntu0.1~esm6?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.627-1",
        "1.628-1",
        "1.630-1",
        "1.630-1ubuntu0.1~esm1",
        "1.630-1ubuntu0.1~esm4",
        "1.630-1ubuntu0.1~esm5",
        "1.630-1ubuntu0.1~esm6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.634-1ubuntu0.2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.634-1ubuntu0.2+esm2?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.633-1",
        "1.634-1",
        "1.634-1build1",
        "1.634-1ubuntu0.1",
        "1.634-1ubuntu0.2",
        "1.634-1ubuntu0.2+esm1",
        "1.634-1ubuntu0.2+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.640-1ubuntu0.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.640-1ubuntu0.3+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.637-1",
        "1.639-1",
        "1.640-1",
        "1.640-1ubuntu0.1",
        "1.640-1ubuntu0.2",
        "1.640-1ubuntu0.3",
        "1.640-1ubuntu0.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.643-1ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.643-1ubuntu0.1+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.642-1",
        "1.642-1build1",
        "1.643-1",
        "1.643-1ubuntu0.1",
        "1.643-1ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.643-3ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.643-3ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.643-3build2",
        "1.643-3build3",
        "1.643-3ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.643-4ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.643-4ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.643-4",
        "1.643-4build1",
        "1.643-4build2",
        "1.643-4build3",
        "1.643-4ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libdbi-perl",
            "binary_version": "1.647-1ubuntu0.26.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libdbi-perl",
        "purl": "pkg:deb/ubuntu/libdbi-perl@1.647-1ubuntu0.26.04.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.647-1",
        "1.647-1build1",
        "1.647-1ubuntu0.26.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted \u003c= and \u003e= SQL operators on text. DBI::SQL::Nano, DBI\u0027s built-in mini-SQL engine, evaluated WHERE predicates incorrectly in some cases. In the non-numeric string branch of the is_matched method, \u003c= was evaluated using Perl\u0027s ge operator, and \u003e= was evaluated using Perl\u0027s le operator. SQL::Nano is the fallback query engine for DBI\u0027s 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 \u003c=/\u003e= comparison silently returns the wrong rows.",
  "id": "UBUNTU-CVE-2026-15043",
  "modified": "2026-07-14T10:16:00Z",
  "published": "2026-07-14T10:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-15043"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-15043"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/41805128/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/perl5-dbi/dbi/security/advisories/GHSA-mv45-ff6j-x9jp"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/perl5-dbi/dbi/commit/e9742ef85a75867cbd696860e3bf3e32b681f98d.patch"
    },
    {
      "type": "REPORT",
      "url": "https://metacpan.org/release/HMBRAND/DBI-1.651/changes"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/07/14/9"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-15043"
  ]
}



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