Severity
7.5
High severity
Details
- CVSS score
- 7.5
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CWE ID
-
- CWE-1284 Improper Validation of Specified Quantity in Input
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
- CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes
Overview
About vulnerability
Kysely is a type-safe TypeScript SQL query builder. From 0.26.0 to 0.28.16, DefaultQueryCompiler.visitJSONPathLeg does not escape JSON-path metacharacters (., [, ], *, **, ?). When attacker-controlled input flows into eb.ref(col, ‘->$’).key(input) or .at(input) — including type-safe code where the JSON column is shaped like Record<string, T> so K extends string is the inferred type — every dot becomes a path-leg separator, letting an attacker traverse from the intended key into sibling and child fields the developer never meant to expose. The result is read access (and, in update statements, write access) to JSON sub-fields outside the intended scope across MySQL, PostgreSQL ->$/->>$, and SQLite. This vulnerability is fixed in 0.28.17.Details
- Affected product:
- kysely
- Affected packages:
- kysely @ 0.28.11