CVE-2026-33442

Published: Mar 26, 2026Modified: Mar 31, 2026

8.1

Vector

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

Exploitability: 2.2 / Impact: 5.9

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Kysely: Kysely

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Kysely Kysely	From 0.28.12 to 0.28.14

Related CWEs

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

References (1)

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

Source: security-advisories@github.com

ExploitMitigationVendor Advisory

Timeline

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