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.
References8
- github.com/hypequery/hypequery/blob/main/packages/clickhouse/CH…
- github.com/hypequery/hypequery/commit/2879161a810fed2c2222f7858…
- github.com/hypequery/hypequery/commit/2dc1df7bae
- github.com/hypequery/hypequery/commit/4dfa9d77d70a08b970e722268…
- github.com/hypequery/hypequery/pull/349
- github.com/hypequery/hypequery/releases/tag/@hypequery/clickhou…
- github.com/hypequery/hypequery/releases/tag/@hypequery/clickhou…
- github.com/hypequery/hypequery/security/advisories/GHSA-6wcc-39…
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 58 · as of 13 November 2026
- CWE
- CWE-89
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.