{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105090 exists.","fix":"No fix has been published for CVE-2026-105090 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-105090 is a medium-severity cross-site scripting vulnerability in Formbricks, published on 3 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-105090 and fix it if it is affected.\n\nWhat it is: CVE-2026-105090 is a medium-severity cross-site scripting vulnerability in Formbricks, published on 3 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105090 exists.\n\nAffected product: Formbricks. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-105090/ (Markdown: https://insights.sbomify.com/CVE-2026-105090/index.md)","id":"CVE-2026-105090","markdown":"https://insights.sbomify.com/CVE-2026-105090/index.md","name":"CVE-2026-105090","record":{"aliases":["GHSA-q9hg-xqvp-x2xv"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Formbricks survey platform","requires_auth":"low_privilege","summary":"A lower-privileged user can inject malicious scripts via survey head scripts, executing arbitrary JavaScript in other users' sessions.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"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"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Cross-site scripting in Formbricks","id":"CVE-2026-105090","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Omega Solution CoinEx Crypto Customer Profile API customer authorization","id":"CVE-2026-105096"},"packages":[],"prev":{"headline":"WWBN AVideo through 29.2.0 Stored XSS via trailer1 in YouPHPFlix2 Templates","id":"CVE-2026-105089"},"products":["Formbricks"],"published":"2026-10-03","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-05","vendors":["Formbricks"]},"summary":"A lower-privileged user can inject malicious scripts via survey head scripts, executing arbitrary JavaScript in other users' sessions.","url":"https://insights.sbomify.com/CVE-2026-105090/"}