SEPTEMBER 28, 2026
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Case File

CVE-2021-40909

CRITICAL · CVSS 9.6 EPSS 2.18% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-01-24 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.6. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-40909
Severity
CRITICAL
CVSS
9.6
EPSS
2.18%

Original NVD Description

Cross site scripting (XSS) vulnerability in sourcecodester PHP CRUD without Refresh/Reload using Ajax and DataTables Tutorial v1 by oretnom23, allows remote attackers to execute arbitrary code via the first_name, last_name, and email parameters to /ajax_crud.