What is CVE-2020-23754?

CVE-2020-23754 is a critical-severity vulnerability in Php-Fusion Phpfusion, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-11-02.

How severe is CVE-2020-23754?

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

XSS in Php-Fusion Phpfusion

CVE-2020-23754

Cross Site Scripting (XSS) vulnerability in infusions/member_poll_panel/poll_admin.php in PHP-Fusion 9.03.50, allows attackers to execute arbitrary code, via the polls feature.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-11-02 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.016 (74.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Php-Fusion Phpfusion — versions 9.03.50

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/php-fusion/PHP-Fusion/issues/2315 (Broken Link)
user-images.githubusercontent.com/62001260/81574112-9412e100-93cf-11ea-9493-615… (Third Party Advisory)
user-images.githubusercontent.com/62001260/81574006-6fb70480-93cf-11ea-814c-55a… (Third Party Advisory)

Frequently asked questions

What is CVE-2020-23754?: CVE-2020-23754 is a critical-severity vulnerability in Php-Fusion Phpfusion, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-11-02.
How severe is CVE-2020-23754?: Critical severity. CVSS v3 base score is 9.6 out of 10.