CVE-2026-54658
Medium
Elevated severity or exploit probability.
CVSS base
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.8%
55.3th percentile
CISA KEV
Not listed
Weakness / dates
CWE-89
Published 2026-07-28 · modified 2026-08-04
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.
References
- https://github.com/hypequery/hypequery/blob/main/packages/clickhouse/CHANGELOG.md#202
- https://github.com/hypequery/hypequery/commit/2879161a810fed2c2222f785816ff05510976960
- https://github.com/hypequery/hypequery/commit/2dc1df7bae
- https://github.com/hypequery/hypequery/commit/4dfa9d77d70a08b970e722268b75ca7d13db0bdf
- https://github.com/hypequery/hypequery/pull/349
- https://github.com/hypequery/hypequery/releases/tag/@hypequery/clickhouse@2.0.2
- https://github.com/hypequery/hypequery/releases/tag/@hypequery/clickhouse@2.5.1
- https://github.com/hypequery/hypequery/security/advisories/GHSA-6wcc-39rp-hh9p