{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105090","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","state":"PUBLISHED","assignerShortName":"mitre","dateReserved":"2026-10-03T01:59:10.142Z","datePublished":"2026-10-03T01:59:10.911Z","dateUpdated":"2026-10-05T17:05:12.057Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://github.com/formbricks/formbricks","defaultStatus":"unaffected","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"}]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre","dateUpdated":"2026-10-03T01:59:10.911Z"},"references":[{"name":"Formbricks release 6.0.1 (fix)","tags":["release-notes","patch"],"url":"https://github.com/formbricks/formbricks/releases/tag/6.0.1"},{"name":"Formbricks release 5.4.4 (fix, backport)","tags":["release-notes","patch"],"url":"https://github.com/formbricks/formbricks/releases/tag/5.4.4"},{"name":"PR #9432 - require Manage access to change survey custom head scripts","tags":["patch"],"url":"https://github.com/formbricks/formbricks/pull/9432"},{"tags":["technical-description"],"url":"https://www.sec4check.pl/blog/posts/cve-formbricks-broken-access-control-stored-xss-custom-head-scripts.html"}],"x_generator":{"engine":"CVE-Request-form 0.0.1"}},"adp":[{"references":[{"url":"https://www.sec4check.pl/blog/posts/cve-formbricks-broken-access-control-stored-xss-custom-head-scripts.html","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-05T17:04:02.074755Z","id":"CVE-2026-105090","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-05T17:05:12.057Z"}}]}}