CVE-2025-1386: ch-go HTTP Request/Response Smuggling

Vulnerability summary

CVE-2025-1386 is a medium (CVSS 5.9) HTTP Request/Response Smuggling vulnerability in ch-go. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 32.3% of scored vulnerabilities.

Timeline

1. 11-04-2025
   PublishedVulnerability first disclosed.
2. 11-04-2025
   Last modifiedVulnerability information updated.

Description

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.

• CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.