What is CVE-2020-8521?

CVE-2020-8521 is a critical-severity vulnerability in Phpzag, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-07-07.

How severe is CVE-2020-8521?

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

SQL Injection in Phpzag

CVE-2020-8521

SQL injection with start and length parameters in Records.php for phpzag live add edit delete data tables records with ajax php mysql

Vulnerability class: SQL Injection

Published 2020-07-07 · 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: 0.014 (71.7th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Phpzag
Phpzag Live Add Edit Delete Data Tables Records With Ajax PHP MySQL — versions 1.0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

www.vapidlabs.com/advisory.php (Exploit, Third Party Advisory)
www.phpzag.com/live-add-edit-delete-datatables-records-with-ajax-php-mysql/ (Product, Vendor Advisory)
www.openwall.com/lists/oss-security/2020/07/09/1 (mailing-list, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8521?: CVE-2020-8521 is a critical-severity vulnerability in Phpzag, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-07-07.
How severe is CVE-2020-8521?: Critical severity. CVSS v3 base score is 9.8 out of 10.