How severe is CVE-2021-40909?

Critical severity. CVSS v3 base score is 9.6 out of 10.

XSS in PHP Crud Without Refresh\/reload Using Ajax And Datatables Tutorial Project

CVE-2021-40909

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.022 (80.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Php_crud_without_refresh\/reload_using_ajax_and_datatables_tutorial_project Php_crud_without_refresh\/reload_using_ajax_and_datatables_tutorial — versions 1.0
N/a — versions n/a

Weakness classification (CWE)

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-40909?: CVE-2021-40909 is a critical-severity vulnerability in PHP Crud Without Refresh\/reload Using Ajax And Datatables Tutorial Project, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2022-01-24.
How severe is CVE-2021-40909?: Critical severity. CVSS v3 base score is 9.6 out of 10.