Blog

"Prevention is cheaper than a breach"

Home / Threats / CVE-2021-24900

CVE-2021-24900 - Before 4 Plugin

CVE-2021-24900

The Ninja Tables WordPress plugin before 4.1.8 does not sanitise and escape some of its table fields, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

CVE-2021-24900

MEDIUM CVSS 4.8 Published 2022-02-01 Updated 2024-11-21
AI Risk Moderate (52/100) Active Exploit: No strong signal Published Exploit: Public exploit references found Priority: P4 Planned
Severity Band MEDIUM
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Affected Components 2
Reference Links 2
AI Risk Engine Moderate (52/100)
Exploitability Medium
Active Exploitation No strong signal
Published Exploit Status Public exploit references found

Threat Timeline

  1. 2022-02-01 CVE published and first recorded in the threat feed.
  2. 2024-11-21 Record updated with latest vulnerability metadata.
  3. 2026-04-12 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 4 days ago

AI enriched 4 days ago (2026-04-12 03:07 UTC)

Technical Summary

The Ninja Tables WordPress plugin before 4.1.8 does not sanitise and escape some of its table fields, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Potential Impact

Severity is MEDIUM (CVSS 4.8). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Medium based on published exploit references.

Primary risk drivers: published exploit references

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 52/100 (Moderate, Medium) with priority P4 Planned. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Before 4 PLUGIN · before-4 Affected: < 4.1.8 Fixed in: 4.1.8
Ninja Tables PLUGIN · ninja-tables Affected: < 4.1.8 Fixed in: 4.1.8
Scroll to top