CVE-2026-105090
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.
CVE-2026-105090
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-105090
Formbricks
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Formbricks",
"product": "Formbricks",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "5.4.4",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.0.0",
"lessThan": "6.0.1",
"versionType": "semver"
}
],
"collectionURL": "https://github.com/formbricks/formbricks",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-105090
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #8808 · Revision 1
- Added to Heist Feed
- Publisher date