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CVE-2026-33442

Kysely SQL injection

8.1 HIGHPublic exploitEPSS 0.45%
  1. Published26 Mar 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Kysely≥ 0.28.12 < 0.28.14

Remediation

Fixed in
Kysely≥ 0.28.14

References

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Frequently asked

Is CVE-2026-33442 being actively exploited?

CVE-2026-33442 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.45%.

How severe is CVE-2026-33442?

CVE-2026-33442 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.45% probability of exploitation.

Which products are affected by CVE-2026-33442?

Affected products include Kysely.

How do I fix CVE-2026-33442?

Upgrade affected software to a fixed version, for example Kysely 0.28.14 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-33442 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.