CVE-2026-33468
HIGHKysely 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
Title source: cnaDescription
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 (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/kysely-org/kysely/security/advisories/GHSA-8cpq-38p9-67gx
Scores
CVSS v3
8.1
EPSS
0.0003
EPSS Percentile
9.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-89
Status
published
Products (3)
kysely/kysely
< 0.28.14
kysely-org/kysely
< 0.28.14
npm/kysely
0 - 0.28.14npm
Published
Mar 26, 2026
Tracked Since
Mar 26, 2026