CVE-2026-82291

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-82291 HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-82291

HeyForm versions before 3.0.0-rc.8 reflect the request Origin header in CORS responses while simultaneously allowing credentials. This misconfiguration enables attackers to execute authenticated GraphQL queries from a malicious page visited by a logged-in user, granting access to workspaces, proj...

CVE-2026-82291

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-82291 HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

EUVD-2026-67822

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-82291 HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

PT-2026-83314

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-82291: Permissive Cross-domain Policy with Untrusted Domains

HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication. Attackers can execute authenticated GraphQL queries from malicious pages visited by logged-in users to access workspaces, projects, forms,...

CVE-2026-63429

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, MP...

CVE-2026-45797

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, the /api/upload endpoint allows unauthenticated file uploads including SVG files. Uploaded SVGs are stored in the static assets directory and served with Content-Type: image/svg+xml by Express's serve-static middleware, allowing...

CVE-2026-35198

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, a stored cross-site scripting XSS vulnerability in the form builder allows a low-privileged team member to inject malicious JavaScript that executes when a team owner views the form, leading to complete account takeover through...

CVE-2026-63429 HeyForm has unauthenticated /api/upload endpoint that accepts arbitrary files with no auth/session/form context

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, MP...

CVE-2026-63429 HeyForm has unauthenticated /api/upload endpoint that accepts arbitrary files with no auth/session/form context

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, MP...

CVE-2026-63429

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, MP...

CVE-2026-63429 HeyForm has unauthenticated /api/upload endpoint that accepts arbitrary files with no auth/session/form context

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, MP...

CVE-2026-63428 HeyForm: completeSubmission persists submitter-supplied hidden fields verbatim without validating against the form's declared hidden-field set

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.9, completeSubmission accepts a hiddenFields: id, name, value array from the submitter and stores it verbatim in submission.hiddenFields, without validating the supplied id/name against the form's declared form.hiddenFields schema...

CVE-2026-63428

Summary: HeyForm (open-source form builder) prior to 3.0.0-rc.9 stores submitter-supplied hiddenFields unvalidated, allowing an anonymous submitter to inject arbitrary key/value data into submission.hiddenFields. Those fields are forwarded to every webhook integration registered on the form, enab...

CVE-2026-35198 HeyForm vulnerable to stored XSS via form field titles

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, a stored cross-site scripting XSS vulnerability in the form builder allows a low-privileged team member to inject malicious JavaScript that executes when a team owner views the form, leading to complete account takeover through...

CVE-2026-35198 HeyForm vulnerable to stored XSS via form field titles

HeyForm is an open-source form builder. Prior to version 3.0.0-rc.7, a stored cross-site scripting XSS vulnerability in the form builder allows a low-privileged team member to inject malicious JavaScript that executes when a team owner views the form, leading to complete account takeover through...