CVE-2026-33442

HIGH

8.1

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.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

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

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published3/26/2026

Last Modified3/31/2026

Sourcenvd

Honeypot Sightings0

Affected Products

kysely:kysely

Weaknesses (CWE)

CWE-89

References

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

IOC Correlations

No correlations recorded

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