When using the ch-go library, under a specific condition when the query includes a large, uncompressed malicious external data, it is possible for an attacker in control of such data to smuggle another query packet into the connection stream.

Affected: Go: github.com/ClickHouse/ch-go

### Impact

When using the ch-go library, under a specific condition when the query includes a large, uncompressed malicious external data, it is possible for an attacker in control of such data to smuggle another query packet into the connection stream.

### Patches

If you are using ch-go library, we recommend you to update to at least version 0.65.0.

### Credit

This issue was found by lixts and reported through our bugcrowd program.

govulncheck-vulndb-0.0.20250422T181640-1.1 on GA media