CVE-2026-33468: Kysely is a type-safe TypeScript SQL query builder

This week

HIGH 8.1REMOTEUPGRADE

CVE-2026-33468 is a high-severity flaw (CVSS 8.1) affecting kysely. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kysely is a type-safe TypeScript SQL query builder. Prior to version 0.28.14, Kysely's `DefaultQueryCompiler.sanitizeStringLiteral()` only escapes single quotes by doubling them (`'` → `''`) but does not escape backslashes. When used with the MySQL dialect (where `NO_BACKSLASH_ESCAPES` is OFF by default), an attacker can use a backslash to escape the trailing quote of a string literal, breaking out of the string context and injecting arbitrary SQ

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: kysely

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 17:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

kysely kysely UPGRADE

Affected: < 0.28.14

Fixed in: 0.28.14

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls kysely

2. UPGRADE to 0.28.14

npm install kysely@">=0.28.14"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33468?

kysely: upgrade to 0.28.14. Exact commands for each OS are on this page.

Is CVE-2026-33468 being exploited?

CVE-2026-33468 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33468 affect?

CVE-2026-33468 affects kysely. Severity is high (CVSS 8.1). Kysely is a type-safe TypeScript SQL query builder. Prior to version 0.28.14, Kysely's `DefaultQueryCompiler.sanitizeStringLiteral()` only escapes single quotes by doubling them (`'` → `''`) but does not escape backslashes. When used with t

How urgent is CVE-2026-33468?

Priority 48/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

MySQL vulnerabilities

Related CVEs

CVE-2026-33442 HIGH 8.1 UPGRADE Kysely is a type-safe TypeScript SQL query builder
CVE-2026-32763 HIGH 8.2 UPGRADE Kysely is a type-safe TypeScript SQL query builder

References

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