heyform has 2 CVEs on record. 2 were published in the last 90 days. The median CVSS is 7.8 (high).
CVEs per month
Last 12 months, by publish date
1225/120126/010226/020326/030426/040526/050626/060726/070826/080926/091026/101126/11
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- —
- Last 90 days
- 2 prev 0
2
Total CVEs
0
Critical
0
CISA KEV
0
Exploited
Worst active — by depth score
CVE-2026-82291High· 8.1HeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication57CVE-2026-102615High· 7.6HeyForm: Uploaded HTML files are served as text/html on the app origin with no CSP — stored XSS42
heyform vulnerabilities
CVEs affecting heyform, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
CVE-2026-102615High· 7.6HeyForm: Uploaded HTML files are served as text/html on the app origin with no CSP — stored XSS
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…
▾ Twilightheyform · heyformEPSS 0.25%via CVEORG
CVE-2026-82291High· 8.1PoCHeyForm before 3.0.0-rc.8 reflects the request Origin header in CORS responses while allowing credentials, enabling cross-origin requests with authentication
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 visit…
▾ Midnightheyform · heyformEPSS 0.55%via NVD