CVE-2026-90583

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Source
https://cve.org/CVERecord?id=CVE-2026-90583
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90583.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-90583
Published
2026-09-13T20:00:09Z
Modified
2026-10-28T02:30:35Z
Severity
  • 5.3 (Medium) CVSS_V4 - 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 CVSS Calculator
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.

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

Affected packages

Git / github.com/kagisearch/smallweb

Affected ranges

Type
GIT
Repo
https://github.com/kagisearch/smallweb
Events
Introduced
0ecb9c48edbf98dc7e934b54fbac43869e64b4cf
Fixed
00b68144e583f20a6b67e29cf01bc07f57979ffb
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"
                },
                {
                    "last_affected":  "0ecb9c48edbf98dc7e934b54fbac43869e64b4cf"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "00b68144e583f20a6b67e29cf01bc07f57979ffb"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

Other
0ecb9c48edbf98dc7e934b54fbac43869e64b4cf

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90583.json"