Blog

"Prevention is cheaper than a breach"

Home / Threats / CVE-2023-4827

CVE-2023-4827 - Before 1 Plugin

CVE-2023-4827

The File Manager Pro WordPress plugin before 1.8 does not properly check the CSRF nonce in the `fs_connector` AJAX action. This allows attackers to make highly privileged users perform unwanted file system actions via CSRF attacks by using GET requests, such as uploading a web shell.

CVE-2023-4827

HIGH CVSS 8.8 Published 2023-10-16 Updated 2025-04-23
AI Risk High (78/100) 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:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Components 3
Reference Links 1
AI Risk Engine High (78/100)
Exploitability High
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2023-10-16 CVE published and first recorded in the threat feed.
  2. 2025-04-23 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 7 days ago

AI enriched 7 days ago (2026-04-09 08:22 UTC)

Technical Summary

The File Manager Pro WordPress plugin before 1.8 does not properly check the CSRF nonce in the `fs_connector` AJAX action. This allows attackers to make highly privileged users perform unwanted file system actions via CSRF attacks by using GET requests, such as uploading a web shell.

Potential Impact

Severity is HIGH (CVSS 8.8). 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 severity and technical exposure profile.

Primary risk drivers: severity and technical exposure profile

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

Before 1 PLUGIN · before-1 Affected: < 1.8 Fixed in: 1.8
File Manager Pro PLUGIN · file-manager-pro Affected: < 1.8 Fixed in: 1.8
Filester PLUGIN · filester Affected: < 1.8 Fixed in: 1.8
Scroll to top