HIGHCVE-2026-33442Published Modified CNA GitHub_M
CVE-2026-33442: Kysely has a MySQL SQL Injection via Backslash Escape Bypass in non-type-safe usage of JSON path keys.
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.
Metrics
- CVSS v3.1
- 8.1
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- kysely-org / kysely>= 0.28.12, < 0.28.14
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H