CVE-2026-15043

{
  "id": "CVE-2026-15043",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-07-14T10:16:31.253",
  "lastModified": "2026-10-24T21:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted <= and >= SQL operators on text.\n\nDBI::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.\n\nSQL::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.\n\nThe 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."
    },
    {
      "lang": "es",
      "value": "Las versiones de DBI::SQL::Nano desde la 1.42 anteriores a la 1.651 para Perl tienen invertidos los operadores SQL <= y >= en texto.\n\nDBI::SQL::Nano, el motor mini-SQL integrado de DBI, evaluó predicados WHERE incorrectamente en algunos casos. En la rama de cadena no numérica del método is_matched, <= se evaluó usando el operador ge de Perl, y >= se evaluó usando el operador le de Perl.\n\nSQL::Nano es el motor de consulta de respaldo para los controladores de DBI respaldados por archivos (DBD::File, DBD::DBM, controladores de estilo CSV) siempre que SQL::Statement no esté instalado, y se fuerza siempre que DBI_SQL_NANO=1. Las consultas sobre dichas tablas usan estos predicados directamente.\n\nEl impacto depende del contexto. Donde una aplicación depende de una cláusula WHERE para filtrar datos respaldados por archivos para políticas o autorización, una comparación <=/>= invertida devuelve silenciosamente las filas incorrectas."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "HMBRAND",
          "product": "DBI::SQL::Nano",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "DBI",
          "programFiles": [
            "lib/DBI/SQL/Nano.pm"
          ],
          "programRoutines": [
            {
              "name": "DBI::SQL::Nano::is_matched"
            }
          ],
          "repo": "https://github.com/perl5-dbi/dbi",
          "versions": [
            {
              "version": "1.42",
              "lessThan": "1.651",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-14T14:14:59.552000Z",
          "id": "CVE-2026-15043",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-480"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/perl5-dbi/dbi/commit/e9742ef85a75867cbd696860e3bf3e32b681f98d.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://github.com/perl5-dbi/dbi/security/advisories/GHSA-mv45-ff6j-x9jp",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/HMBRAND/DBI-1.651/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/07/14/9",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}