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OpenAdvisories
High · 8.1 CVE-2026-33468 EUVD-2026-16265GHSA-8cpq-38p9-67gx

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

Published Mar 26, 2026 · Updated Mar 26, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
kysely-org kysely < 0.28.14 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling langfuse-3 3.162.0-r0 —
Wolfi rolling langfuse-3-worker 3.163.0-r0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm kysely < 0.28.14 0.28.14 GHSA-8cpq-38p9-67gx

References