{"id":"CVE-2026-104461","summary":"YesWiki before 4.6.7 Stored XSS via Unsanitized SVG Upload in Bazar FileField","details":"YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in the Bazar FileField, which validates only the upload's file extension and never calls HtmlPurifierService::cleanFile, so SVG files are stored verbatim and served inline as image/svg+xml. Authenticated users can submit entries via POST /api/entries/{formId} with SVG files containing script that executes in the wiki origin when the file is opened, enabling administrator session or account compromise.","aliases":["GHSA-67v5-7pfv-pp9m"],"modified":"2026-10-04T02:46:36.797109138Z","published":"2026-10-02T11:38:29.623Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104461.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104461.json"},{"type":"ADVISORY","url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-67v5-7pfv-pp9m"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104461"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-stored-xss-via-unsanitized-svg-upload-in-bazar-filefield"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/yeswiki/yeswiki","events":[{"introduced":"0"},{"fixed":"07120ed8971047f504f7ec78060828f1895f475f"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"4.6.7"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v4.6.6","v4.6.5","v4.6.4","v4.6.3","v4.6.2","v4.6.0","v4.5.5","v4.5.4","v4.5.3","v4.5.2","v4.5.1","v4.4.3","v4.4.2","v4.4.1","v4.4.0","v4.3.1","v4.3.0","v4.2.2","v4.2.1","v4.2.0","v4.1.5","v4.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104461.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}