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Arforms - Security Vulnerability (CVE-2024-4620)

CVE-2024-4620

The ARForms - Premium WordPress Form Builder Plugin WordPress plugin before 6.6 allows unauthenticated users to modify uploaded files in such a way that PHP code can be uploaded when an upload file input is included on a form

CVE-2024-4620

CRITICAL CVSS 9.8 Published 2024-06-07 Updated 2026-06-17
AI Risk Critical (96/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P1 Immediate
Severity Band CRITICAL
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Components 1
Reference Links 1
AI Risk Engine Critical (96/100)
Exploitability High
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2024-06-07 CVE published and first recorded in the threat feed.
  2. 2026-06-17 Record updated with latest vulnerability metadata.
  3. 2026-04-09 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 172 days ago

AI enriched 172 days ago (2026-04-09 07:46 UTC)

Technical Summary

The ARForms - Premium WordPress Form Builder Plugin WordPress plugin before 6.6 allows unauthenticated users to modify uploaded files in such a way that PHP code can be uploaded when an upload file input is included on a form

Potential Impact

Severity is CRITICAL (CVSS 9.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as High based on low-bar exploit prerequisites.

Primary risk drivers: low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Arforms PLUGIN · arforms Affected: < 6.6 Fixed in: 6.6

References

What to do about this

Patch immediately Serious, and reachable without meaningful privilege.

Fix it

Update Arforms to 6.6 or later.

That is the complete fix. Everything below is what protects you in the meantime.

No Hack Halt control meaningfully contains this one — updating is the remedy. We would rather say so than sell you something that will not help.

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Not sure if you are affected?

Scan your site to see whether it runs Arforms, and at which version.

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Am I affected by this vulnerability?

You are affected if your site runs Arforms. Versions below 6.6 are vulnerable; that release and later are not. No account is needed to exploit this, so a public site is reachable by anyone.

How do I fix it?

Update Arforms to version 6.6 or later. That is the complete fix.