{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63429 exists.","fix":"No fix has been published for CVE-2026-63429 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-63429 is a high-severity vulnerability in heyform, published on 20 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-63429 and fix it if it is affected.\n\nWhat it is: CVE-2026-63429 is a high-severity vulnerability in heyform, published on 20 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63429 exists.\n\nAffected product: heyform. 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-2026-63429/ (Markdown: https://insights.sbomify.com/CVE-2026-63429/index.md)","id":"CVE-2026-63429","markdown":"https://insights.sbomify.com/CVE-2026-63429/index.md","name":"CVE-2026-63429","record":{"aliases":["GHSA-432x-54v2-p7p7"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"HeyForm form builder","requires_auth":"none","summary":"Unauthenticated users can upload arbitrary files to HeyForm, receiving permanent public URLs, bypassing intended access controls.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, `POST /api/upload` has no authentication guard, no global guard, no form-context validation, no `openToken` requirement, and no session cookie check. Any anonymous internet user can upload files (PDF, DOC/DOCX, XLS/XLSX, CSV, TXT, MP4, images, etc., up to 10 MB) and receive a permanent public URL on the HeyForm domain. The endpoint is used by both authenticated form creators and unauthenticated form submitters; because no form-context binding exists, every request to it is anonymously accepted. Version 3.0.0-rc.9 contains a patch for the issue.","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":"HeyForm has unauthenticated /api/upload endpoint that accepts arbitrary files with no auth/session/form context","id":"CVE-2026-63429","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"file_upload","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"ammonia: mXSS in ammonia via MathML `annotation-xml` encoding strip","id":"CVE-2026-63430"},"packages":[],"prev":{"headline":"Business logic in heyform","id":"CVE-2026-63428"},"products":["heyform"],"published":"2026-07-20","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-20","vendors":["heyform"]},"summary":"Unauthenticated users can upload arbitrary files to HeyForm, receiving permanent public URLs, bypassing intended access controls.","url":"https://insights.sbomify.com/CVE-2026-63429/"}