Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kysely | Kysely | >= 0.28.12, < 0.28.14 |
Related Weaknesses (CWE)
References
- https://github.com/kysely-org/kysely/security/advisories/GHSA-fr9j-6mvq-frcvExploitMitigationVendor Advisory
FAQ
What is CVE-2026-33442?
CVE-2026-33442 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 escap...
How severe is CVE-2026-33442?
CVE-2026-33442 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33442?
Check the references section above for vendor advisories and patch information. Affected products include: Kysely Kysely.