What is CVE-2021-36503?

CVE-2021-36503 is a critical-severity vulnerability in Native-Php-Cms Project, classified under SQL Injection. CVSS score: 9.8/10. Published 2023-02-03.

How severe is CVE-2021-36503?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Native-Php-Cms Project

CVE-2021-36503

SQL injection vulnerability in native-php-cms 1.0 allows remote attackers to run arbitrary SQL commands via the cat parameter to /list.php file.

Vulnerability class: SQL Injection

Published 2023-02-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (56.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Native-Php-Cms Project — versions 1.0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

github.com/Fanli2012/native-php-cms/issues/3 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-36503?: CVE-2021-36503 is a critical-severity vulnerability in Native-Php-Cms Project, classified under SQL Injection. CVSS score: 9.8/10. Published 2023-02-03.
How severe is CVE-2021-36503?: Critical severity. CVSS v3 base score is 9.8 out of 10.