CVE-2026-90583 | kagisearch smallweb up to 0ecb9c48edbf98dc7e934b54fbac43869e64b4cf Query String Rendering app/sw.py index qs cross site scripting (Issue 854)

A vulnerability identified as problematic has been detected in kagisearch smallweb up to 0ecb9c48edbf98dc7e934b54fbac43869e64b4cf. The affected element is the function index of the file app/sw.py of the component Query String Rendering. Performing a manipulation of the argument qs results in cross site scripting.

This vulnerability is reported as CVE-2026-90583. The attack is possible to be carried out remotely. No exploit exists.

This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. It is recommended to apply a patch to fix this issue.

Exploitability requires a raw HTTP request carrying unencoded double-quote characters in the query string – Werkzeug’s request.query_string returns the raw request-target, and ordinary browsers percent-encode ” as %22, so the payload only lands via netcat/curl-style raw sockets.VulDB Recent EntriesRead More