{"id":"CVE-2026-90583","state":"PUBLISHED","title":"kagisearch smallweb Query String Rendering sw.py index cross site scripting","description":"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.","publishedAt":"2026-09-13T20:00:09.772Z","updatedAt":"2026-09-15T17:58:22.697Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"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","source":"VulDB"},"assigner":"VulDB","products":["kagisearch smallweb"],"affected":[{"vendor":"kagisearch","product":"smallweb","versions":[{"version":"0ecb9c48edbf98dc7e934b54fbac43869e64b4cf","status":"affected"}],"cpes":["cpe:2.3:a:kagisearch:smallweb:*:*:*:*:*:*:*:*"],"modules":["Query String Rendering"]}],"references":["https://vuldb.com/vuln/403168","https://vuldb.com/vuln/403168/cti","https://vuldb.com/cve/CVE-2026-90583","https://vuldb.com/submit/913779","https://github.com/kagisearch/smallweb/issues/854","https://github.com/kagisearch/smallweb/commit/00b68144e583f20a6b67e29cf01bc07f57979ffb","https://github.com/kagisearch/smallweb/"],"weaknesses":["CWE-79","CWE-94"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90583.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90583","state":"PUBLISHED","datePublished":"2026-09-13T20:00:09.772Z","dateUpdated":"2026-09-15T17:58:22.697Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-09-12T17:36:40.109Z"},"containers":{"cna":{"title":"kagisearch smallweb Query String Rendering sw.py index cross site scripting","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"kagisearch","product":"smallweb","versions":[{"version":"0ecb9c48edbf98dc7e934b54fbac43869e64b4cf","status":"affected"}],"cpes":["cpe:2.3:a:kagisearch:smallweb:*:*:*:*:*:*:*:*"],"modules":["Query String Rendering"]}],"references":[{"url":"https://vuldb.com/vuln/403168","name":"VDB-403168 | kagisearch smallweb Query String Rendering sw.py index cross site scripting","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/403168/cti","name":"VDB-403168 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-90583","name":"CVE-2026-90583 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/913779","name":"Submit #913779 | kagisearch smallweb main Cross Site Scripting","tags":["third-party-advisory"]},{"url":"https://github.com/kagisearch/smallweb/issues/854","tags":["issue-tracking"]},{"url":"https://github.com/kagisearch/smallweb/commit/00b68144e583f20a6b67e29cf01bc07f57979ffb","tags":["patch"]},{"url":"https://github.com/kagisearch/smallweb/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":4.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":4.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:N/E:ND/RL:OF/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","type":"CWE","lang":"en","description":"Cross Site Scripting"}]},{"descriptions":[{"cweId":"CWE-94","type":"CWE","lang":"en","description":"Code Injection"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-09-13T20:00:09.772Z"},"timeline":[{"time":"2026-09-12T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-09-12T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-09-12T19:41:44.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Customeres (VulDB User)","type":"reporter"}],"tags":["x_open-source"],"x_generator":["VulDB PVTS v202609"]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/kagisearch/smallweb/issues/854","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T17:58:17.238128Z","id":"CVE-2026-90583","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-15T17:58:22.697Z"}}]}}}