FKIE_CVE-2026-33442

Vulnerability from fkie_nvd - Published: 2026-03-26 17:16 - Updated: 2026-03-31 21:27
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. In versions 0.28.12 and 0.28.13, the `sanitizeStringLiteral` method in Kysely's query compiler escapes single quotes (`'` → `''`) but does not escape backslashes. On MySQL with the default `BACKSLASH_ESCAPES` SQL mode, an attacker can inject a backslash before a single quote to neutralize the escaping, breaking out of the JSON path string literal and injecting arbitrary SQL. Version 0.28.14 fixes the issue.
References
security-advisories@github.comhttps://github.com/kysely-org/kysely/security/advisories/GHSA-fr9j-6mvq-frcvExploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
kysely kysely *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kysely:kysely:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "2CD191E8-8EA7-43BA-B237-9C2091B32B93",
              "versionEndExcluding": "0.28.14",
              "versionStartIncluding": "0.28.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kysely is a type-safe TypeScript SQL query builder. In versions 0.28.12 and 0.28.13, the `sanitizeStringLiteral` method in Kysely\u0027s query compiler escapes single quotes (`\u0027` \u2192 `\u0027\u0027`) but does not escape backslashes. On MySQL with the default `BACKSLASH_ESCAPES` SQL mode, an attacker can inject a backslash before a single quote to neutralize the escaping, breaking out of the JSON path string literal and injecting arbitrary SQL. Version 0.28.14 fixes the issue."
    },
    {
      "lang": "es",
      "value": "Kysely es un constructor de consultas SQL de TypeScript con tipado seguro. En las versiones 0.28.12 y 0.28.13, el m\u00e9todo `sanitizeStringLiteral` en el compilador de consultas de Kysely escapa las comillas simples (`\u0027` ? `\u0027\u0027`) pero no escapa las barras invertidas. En MySQL con el modo SQL predeterminado `BACKSLASH_ESCAPES`, un atacante puede inyectar una barra invertida antes de una comilla simple para neutralizar el escape, saliendo del literal de cadena de ruta JSON e inyectando SQL arbitrario. La versi\u00f3n 0.28.14 corrige el problema."
    }
  ],
  "id": "CVE-2026-33442",
  "lastModified": "2026-03-31T21:27:04.617",
  "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": "2026-03-26T17:16:40.850",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/kysely-org/kysely/security/advisories/GHSA-fr9j-6mvq-frcv"
    }
  ],
  "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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