FKIE_CVE-2026-33468

Vulnerability from fkie_nvd - Published: 2026-03-26 17:16 - Updated: 2026-03-31 21:24
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Kysely is a type-safe TypeScript SQL query builder. Prior to version 0.28.14, Kysely's `DefaultQueryCompiler.sanitizeStringLiteral()` only escapes single quotes by doubling them (`'` → `''`) but does not escape backslashes. When used with the MySQL dialect (where `NO_BACKSLASH_ESCAPES` is OFF by default), an attacker can use a backslash to escape the trailing quote of a string literal, breaking out of the string context and injecting arbitrary SQL. This affects any code path that uses `ImmediateValueTransformer` to inline values — specifically `CreateIndexBuilder.where()` and `CreateViewBuilder.as()`. Version 0.28.14 contains a fix.
References
security-advisories@github.comhttps://github.com/kysely-org/kysely/security/advisories/GHSA-8cpq-38p9-67gxExploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
kysely kysely *
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{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kysely:kysely:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "030AB58C-2968-4A93-8C8D-84D7A571BB94",
              "versionEndExcluding": "0.28.14",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kysely is a type-safe TypeScript SQL query builder. Prior to version 0.28.14, Kysely\u0027s `DefaultQueryCompiler.sanitizeStringLiteral()` only escapes single quotes by doubling them (`\u0027` \u2192 `\u0027\u0027`) but does not escape backslashes. When used with the MySQL dialect (where `NO_BACKSLASH_ESCAPES` is OFF by default), an attacker can use a backslash to escape the trailing quote of a string literal, breaking out of the string context and injecting arbitrary SQL. This affects any code path that uses `ImmediateValueTransformer` to inline values \u2014 specifically `CreateIndexBuilder.where()` and `CreateViewBuilder.as()`. Version 0.28.14 contains a fix."
    },
    {
      "lang": "es",
      "value": "Kysely es un constructor de consultas SQL de TypeScript con seguridad de tipos. Antes de la versi\u00f3n 0.28.14, `DefaultQueryCompiler.sanitizeStringLiteral()` de Kysely solo escapaba las comillas simples duplic\u00e1ndolas (\u0027`\u0027` ? `\u0027\u0027`) pero no escapaba las barras invertidas. Cuando se usa con el dialecto de MySQL (donde `NO_BACKSLASH_ESCAPES` est\u00e1 DESACTIVADO por defecto), un atacante puede usar una barra invertida para escapar la comilla final de un literal de cadena, saliendo del contexto de la cadena e inyectando SQL arbitrario. Esto afecta a cualquier ruta de c\u00f3digo que utilice `ImmediateValueTransformer` para incrustar valores \u2014 espec\u00edficamente `CreateIndexBuilder.where()` y `CreateViewBuilder.as()`. La versi\u00f3n 0.28.14 contiene una correcci\u00f3n."
    }
  ],
  "id": "CVE-2026-33468",
  "lastModified": "2026-03-31T21:24:51.107",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-26T17:16:41.007",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/kysely-org/kysely/security/advisories/GHSA-8cpq-38p9-67gx"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-89"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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