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CVE-2021-24647 - Before 3 Plugin

CVE-2021-24647

The Registration Forms – User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes WordPress plugin before 3.1.7.6 has a flaw in the social login implementation, allowing unauthenticated attacker to login as any user on the site by only knowing their user ID or username

CVE-2021-24647

HIGH CVSS 8.1 Published 2021-11-08 Updated 2024-11-21
AI Risk High (79/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P2 Urgent
Severity Band HIGH
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Components 3
Reference Links 1
AI Risk Engine High (79/100)
Exploitability High
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2021-11-08 CVE published and first recorded in the threat feed.
  2. 2024-11-21 Record updated with latest vulnerability metadata.
  3. 2026-04-11 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 5 days ago

AI enriched 5 days ago (2026-04-11 00:40 UTC)

Technical Summary

The Registration Forms – User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes WordPress plugin before 3.1.7.6 has a flaw in the social login implementation, allowing unauthenticated attacker to login as any user on the site by only knowing their user ID or username

Potential Impact

Severity is HIGH (CVSS 8.1). 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

AI risk score 79/100 (High, High) with priority P2 Urgent. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Before 3 PLUGIN · before-3 Affected: < 3.1.7.6 Fixed in: 3.1.7.6
Invitation Codes PLUGIN · invitation-codes Affected: < 3.1.7.6 Fixed in: 3.1.7.6
Pie Register PLUGIN · pie-register Affected: < 3.7.1.6 Fixed in: 3.1.7.6
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