CVE-2026-54658

Critical

Description

Hypequery is a TypeScript semantic layer for ClickHouse. Prior to 2.5.1, escapeValue() in packages/clickhouse/src/core/utils.ts did not escape backslashes before single quotes during parameter substitution, allowing attacker controlled query parameters with a trailing backslash to escape the closing quote and inject arbitrary SQL. This issue is fixed in version 2.0.2. Version 2.0.2 fixes string parameters, while version 2.5.1 fixes all known vectors. Upgrading to 2.5.1 or later is the only complete fix. In versions 2.0.2 through 2.5.0, serializing non-scalar parameters with JSON.stringify() before passing them is a workaround for the object/array vector only.

SeverityCritical

CVSS9.8

Exploit probability—

Product@hypequery/clickhouse

PublishedJul 28, 2026

First seenJul 28, 2026

Weakness typeCWE-89SQL injection

How to fix

Update

@hypequery/clickhouse2.5.1 or later

Affected products

Product	Affected versions	Fixed in
@hypequery/clickhousenpm	v < 2.5.1	2.5.1

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