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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.

PUBLISHED Reserved 2026-03-19 | Published 2026-03-26 | Updated 2026-03-26 | Assigner GitHub_M




HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Product status

>= 0.28.12, < 0.28.14
affected

References

github.com/...kysely/security/advisories/GHSA-fr9j-6mvq-frcv

cve.org (CVE-2026-33442)

nvd.nist.gov (CVE-2026-33442)

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