Is CVE-2026-54658 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-54658?

CVE-2026-54658 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-54658

Description

Hypequery is a TypeScript semantic layer for ClickHouse. Prior to 2.0.2, 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.