HIGHVulnerability
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, submissions, and respondent data, or modify account settings.
Properties
- severity
- HIGH
- score
- 8.1
- cve_id
- CVE-2026-82291
- signal_observed_at
- 2026-09-16T17:34:19+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- published_at
- 2026-08-28T20:20:20.820
- last_modified
- 2026-09-16T13:42:44.547
Related Entities (2)
HAS_WEAKNESS (1)
→[Weakness]Permissive Cross-domain Security Policy with Untrusted Domains
DESCRIBED_BY (1)
→[Source]NVD
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