kysely up to 0.28.11 visitJSONPathLeg sql injection

Summaryinfo

A vulnerability categorized as critical has been discovered in kysely up to 0.28.11. The affected element is the function visitJSONPathLeg. Executing a manipulation can lead to sql injection. This vulnerability is registered as CVE-2026-32763. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in kysely up to 0.28.11 and classified as critical. This vulnerability affects the function visitJSONPathLeg. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Kysely is a type-safe TypeScript SQL query builder. Versions up to and including 0.28.11 has a SQL injection vulnerability in JSON path compilation for MySQL and SQLite dialects. The `visitJSONPathLeg()` function appends user-controlled values from `.key()` and `.at()` directly into single-quoted JSON path string literals (`'$.key'`) without escaping single quotes. An attacker can break out of the JSON path string context and inject arbitrary SQL. This is inconsistent with `sanitizeIdentifier()`, which properly doubles delimiter characters for identifiers — both are non-parameterizable SQL constructs requiring manual escaping, but only identifiers are protected. Version 0.28.12 fixes the issue.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-32763 since 03/13/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1505.

Upgrading to version 0.28.12 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 0a602bff2f442f6c26d5e047ca8f8715179f6d24 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• kysely

Version

• 0.28.0
• 0.28.1
• 0.28.2
• 0.28.3
• 0.28.4
• 0.28.5
• 0.28.6
• 0.28.7
• 0.28.8
• 0.28.9
• 0.28.10
• 0.28.11

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion