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CVE-2026-33468— Kysely has a MySQL SQL Injection via Insufficient Backslash Escaping in `sql.lit(string)` usage or similar methods that append string literal values into the compiled SQL strings

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

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-33468

Vulnerability Information
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Vulnerability Title
Kysely has a MySQL SQL Injection via Insufficient Backslash Escaping in `sql.lit(string)` usage or similar methods that append string literal values into the compiled SQL strings
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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 < 0.28.14 -

II. Public POCs for CVE-2026-33468

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III. Intelligence Information for CVE-2026-33468

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Vendor Advisories for CVE-2026-33468 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-33468

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