CVE-2026-33442

EUVD-2026-16264

26.03.2026, 17:16

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.

SQL Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	8.1 HIGH	NETWORK	HIGH	NONE	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 26%

Affected Products (NVD)

Vendor	Product	Version
kysely	kysely	0.28.12 ≤ 𝑥 < 0.28.14

𝑥

= Vulnerable software versions

Known Exploits!

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

Common Weakness Enumeration

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

References

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