{"schema":"threatline.record/2","record":{"id":"CVE-2026-105090","aliases":[],"summary":"Formbricks before 5.4.4 and 6 before 6.0.1 allows stored XSS. The survey-level Custom Head Scripts feature did not enforce the documented Manage permission boundary. A workspace member holding only re","details":"Formbricks before 5.4.4 and 6 before 6.0.1 allows stored XSS. The survey-level Custom Head Scripts feature did not enforce the documented Manage permission boundary. A workspace member holding only readWrite permission could configure Custom Head Scripts on a survey, an operation the documentation restricts to the Manage role. Because the configured scripts execute in the authenticated browser session of any user who opens the affected survey, a lower-privileged member can run arbitrary JavaScript (stored cross-site scripting) in the session of higher-privileged users. Fixed versions require Manage access to modify survey Custom Head Scripts.","categories":["Unclassified"],"product":"Formbricks","vendor":"Formbricks","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105090","source_modified_at":"2026-10-05T17:05:12.057Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Formbricks","vendor":"Formbricks","versions":[{"lessThan":"5.4.4","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.0.1","status":"affected","version":"6.0.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105090","source_modified_at":"2026-10-05T17:05:12.057Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Formbricks","ecosystem":null},"version":"5.4.4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105090","source_modified_at":"2026-10-05T17:05:12.057Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Formbricks","ecosystem":null},"version":"6.0.1","basis":"first unaffected version stated in the CVE record"}],"cvss":5.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00263,"percentile":0.17188,"score_date":"2026-10-23"},"published_at":"2026-10-03T01:59:10.911Z","modified_at":"2026-10-05T17:05:12.057Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105090","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-05T17:05:12.057Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105090","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/formbricks/formbricks/releases/tag/6.0.1","tags":["release-notes","patch"]},{"source":"CVE List","url":"https://github.com/formbricks/formbricks/releases/tag/5.4.4","tags":["release-notes","patch"]},{"source":"CVE List","url":"https://github.com/formbricks/formbricks/pull/9432","tags":["patch"]},{"source":"CVE List","url":"https://www.sec4check.pl/blog/posts/cve-formbricks-broken-access-control-stored-xss-custom-head-scripts.html","tags":["exploit"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-05T17:04:02.074755Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-05T17:05:12.057Z","content_hash":"ea8af7d8219750ccbfce44ae253645f3f52aa7942886c27a9674d843550d467d"}}