What is CVE-2020-35613?

CVE-2020-35613 is a critical-severity vulnerability in Joomla Joomla\!, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-12-28.

How severe is CVE-2020-35613?

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

Is CVE-2020-35613 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SQL Injection in Joomla Joomla\!

CVE-2020-35613

An issue was discovered in Joomla! 3.0.0 through 3.9.22. Improper filter blacklist configuration leads to a SQL injection vulnerability in the backend user list.

Vulnerability class: SQL Injection

Published 2020-12-28 · 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: 0.289 (98.1th percentile), scored 2026-10-18.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.289 · newest: 0.289 · change: 0.000

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 3.0.0-3.9.22

Weakness classification (CWE)

CWE-89 — SQL Injection

Public proof-of-concept exploits

HoangKien1020/Joomla-SQLinjection

References

developer.joomla.org/security-centre/831-20201104-core-sql-injection-in-com-use… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2020-35613?: CVE-2020-35613 is a critical-severity vulnerability in Joomla Joomla\!, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-12-28.
How severe is CVE-2020-35613?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-35613 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.