{"id":"CVE-2026-90583","summary":"kagisearch smallweb Query String Rendering sw.py index cross site scripting","details":"A security flaw has been discovered 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. The attack is possible to be carried out remotely. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The patch is named 00b68144e583f20a6b67e29cf01bc07f57979ffb. 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.","modified":"2026-10-08T02:50:42.505356440Z","published":"2026-09-13T20:00:09.772Z","database_specific":{"cna_assigner":"VulDB","cwe_ids":["CWE-79","CWE-94"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90583.json"},"references":[{"type":"WEB","url":"https://github.com/kagisearch/smallweb/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90583.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90583"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-90583"},{"type":"ADVISORY","url":"https://vuldb.com/submit/913779"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/403168"},{"type":"REPORT","url":"https://github.com/kagisearch/smallweb/issues/854"},{"type":"REPORT","url":"https://vuldb.com/vuln/403168/cti"},{"type":"FIX","url":"https://github.com/kagisearch/smallweb/commit/00b68144e583f20a6b67e29cf01bc07f57979ffb"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kagisearch/smallweb","events":[{"introduced":"0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"},{"last_affected":"0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"}]}],"versions":["0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90583.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X"}]}