CVE-2026-54658 @hypequery/clickhouse has SQL Injection in parameter escaping that allows arbitrary SQL execution
Attackers can inject arbitrary SQL via unescaped backslashes in query parameters, leading to data exposure or modification in ClickHouse databases.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54658?
CVE-2026-54658 is a critical SQL injection vulnerability in hypequery, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2026-54658?
2 open source packages ship an affected version, including @hypequery/clickhouse.
| Package | Affected | Fixed in |
|---|---|---|
@hypequery/clickhouse npm | All versions | 2.5.1 |
@hypequery/clickhouse npm | All versions | 2.5.1 |
How do I fix CVE-2026-54658?
Upgrade @hypequery/clickhouse to 2.5.1 or later.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-54658 being exploited?
There is no known exploitation of CVE-2026-54658 in the wild and no public exploit code.
Sources
Also known as GHSA-6wcc-39rp-hh9p.