{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102615", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-29T14:18:02.921Z", "datePublished": "2026-11-05T15:32:30.406Z", "dateUpdated": "2026-11-05T15:32:30.406Z"}, "containers": {"cna": {"title": "HeyForm: Uploaded HTML files are served as text/html on the app origin with no CSP \u2014 stored XSS", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/heyform/heyform/security/advisories/GHSA-pxw5-pjrc-j758", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/heyform/heyform/security/advisories/GHSA-pxw5-pjrc-j758"}, {"name": "https://github.com/heyform/heyform/commit/849f7101d4370b29e716b2d7ee14a86c2f598f3a", "tags": ["x_refsource_MISC"], "url": "https://github.com/heyform/heyform/commit/849f7101d4370b29e716b2d7ee14a86c2f598f3a"}, {"name": "https://github.com/heyform/heyform/releases/tag/v3.0.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/heyform/heyform/releases/tag/v3.0.1"}], "affected": [{"vendor": "heyform", "product": "heyform", "versions": [{"version": "< 3.0.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-05T15:32:30.406Z"}, "descriptions": [{"lang": "en", "value": "HeyForm is an open-source form builder. Prior to 3.0.1, /api/upload accepts a file according to the client-controlled multipart file.mimetype while retaining an HTML filename, and static/upload serves the resulting file as text/html with contentSecurityPolicy: false. An ordinary user can therefore upload active HTML that executes on the HeyForm origin when a victim opens its returned URL. The same-origin script can access /graphql with the victim's session and read or modify data available to that account. The code also permits upload requests tied to an active public form through formId, openToken, and a fieldId belonging to a file or signature question, although the advisory did not fully verify that unauthenticated path end to end. This issue is fixed in version 3.0.1."}], "source": {"advisory": "GHSA-pxw5-pjrc-j758", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "heyform", "vendor": "heyform", "versions": [{"status": "affected", "version": "< 3.0.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "HeyForm is an open-source form builder. Prior to 3.0.1, /api/upload accepts a file according to the client-controlled multipart file.mimetype while retaining an HTML filename, and static/upload serves the resulting file as text/html with contentSecurityPolicy: false. An ordinary user can therefore upload active HTML that executes on the HeyForm origin when a victim opens its returned URL. The same-origin script can access /graphql with the victim's session and read or modify data available to that account. The code also permits upload requests tied to an active public form through formId, openToken, and a fieldId belonging to a file or signature question, although the advisory did not fully verify that unauthenticated path end to end. This issue is fixed in version 3.0.1."}], "id": "CVE-2026-102615", "lastModified": "2026-11-05T16:17:24.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-05T16:17:23.937", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/heyform/heyform/commit/849f7101d4370b29e716b2d7ee14a86c2f598f3a"}, {"source": "security-advisories@github.com", "url": "https://github.com/heyform/heyform/releases/tag/v3.0.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/heyform/heyform/security/advisories/GHSA-pxw5-pjrc-j758"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-11-05T16:30:12.538092+00:00", "updated": "2026-11-05T16:30:12.538099+00:00", "vendors": []}