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
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-33468
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 07:48 UTC · Revision 1
Source evidence
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
core-osv · Original sourcePublished 26 Mar 2026, 17:03 UTC
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.
osv:CVE-2026-33468
Complete source record
{
"id": "dd26d34d713471327a3504fd9e6dbfb1c1d93b987b187777c29a12791794a3f7",
"url": "https://osv.dev/vulnerability/CVE-2026-33468",
"method": "structured",
"payload": {
"kind": "advisory",
"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",
"summary": "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.",
"evidence": "osv:CVE-2026-33468",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-33468",
"aliases": [
"CVE-2026-33468",
"GHSA-8cpq-38p9-67gx"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/kysely-org/kysely",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "91cf3733b2a419f5b17dff118cedb7052ab5300d"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
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},
{
"fixed": "0.28.14"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
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{
"cpe": "cpe:2.3:a:kysely:kysely:*:*:*:*:*:node.js:*:*",
"range": [
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"introduced": "0"
},
{
"fixed": "0.28.14"
}
],
"source": "CPE_RANGE"
}
]
}
}
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33468.json"
}
}
],
"modified": "2026-10-28T02:30:33.797147542Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33468.json",
"https://github.com/kysely-org/kysely/security/advisories/GHSA-8cpq-38p9-67gx",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33468"
],
"provider_metadata": {
"cwe_ids": [
"CWE-89"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33468.json"
}
},
"related_cves": [
{
"value": "CVE-2026-33468",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 500965,
"published_at": "2026-03-26T17:03:05.972+00:00"
}