What is CVE-2020-23179?

CVE-2020-23179 is a medium-severity vulnerability in Php-Fusion, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-02.

How severe is CVE-2020-23179?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Php-Fusion

CVE-2020-23179

A stored cross site scripting (XSS) vulnerability in administration/settings_main.php of PHP-Fusion 9.03.50 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "Site footer" field.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-07-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (38.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Php-Fusion — versions 9.03.50

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/PHPFusion/PHPFusion/issues/2320 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-23179?: CVE-2020-23179 is a medium-severity vulnerability in Php-Fusion, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-02.
How severe is CVE-2020-23179?: Medium severity. CVSS v3 base score is 5.4 out of 10.