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CVE-2026-33442— Kysely has a MySQL SQL Injection via Backslash Escape Bypass in non-type-safe usage of JSON path keys.

Quick assessment

Affected
kysely-org kysely
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kysely是Kysely开源的一个类型安全的TypeScript SQL查询构建器。 Kysely 0.28.14之前版本存在SQL注入漏洞，该漏洞源于sanitizeStringLiteral方法未转义反斜杠，可能导致SQL注入攻击。

CVSS 8.1 · High EPSS 0.45% · P37
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I. Basic Information for CVE-2026-33442

Vulnerability Information
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Vulnerability Title
Kysely has a MySQL SQL Injection via Backslash Escape Bypass in non-type-safe usage of JSON path keys.
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Kysely SQL注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kysely是Kysely开源的一个类型安全的TypeScript SQL查询构建器。 Kysely 0.28.14之前版本存在SQL注入漏洞，该漏洞源于sanitizeStringLiteral方法未转义反斜杠，可能导致SQL注入攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kysely-org kysely >= 0.28.12, < 0.28.14 -

II. Public POCs for CVE-2026-33442

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III. Intelligence Information for CVE-2026-33442

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Vendor Advisories for CVE-2026-33442 (1)

IV. Related Vulnerabilities

Same product: kysely
Same vendor: kysely-org
Same weakness: CWE-89

V. Comments for CVE-2026-33442

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