CVE-2021-28280

Name: CVE-2021-28280
Creator: NVD / NIST
Published: 2021-04-29T15:15:10.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2021-28280 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. CSRF + Cross-site scripting (XSS) vulnerability in search.php in PHPFusion 9.03.110 allows remote attackers to inject arbitrary web script or HTML. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

CSRF + Cross-site scripting (XSS) vulnerability in search.php in PHPFusion 9.03.110 allows remote attackers to inject arbitrary web script or HTML

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Php-Fusion	Phpfusion	9.03.110

References

https://anotepad.com/notes/2skndaytExploit, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/08d6c2ea49bd06fcce32275252f5f25abe61965cPatch, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/1c2b32321cf11ed1cd3ff835f8da0d172c849ce6Patch, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/da9f89ae70219f357fba6fffd2dae1ec886d8a3bPatch, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/fda266c3bb35c650a8c4c51b6923abdfb66ef5cdPatch, Third Party Advisory
https://anotepad.com/notes/2skndaytExploit, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/08d6c2ea49bd06fcce32275252f5f25abe61965cPatch, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/1c2b32321cf11ed1cd3ff835f8da0d172c849ce6Patch, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/da9f89ae70219f357fba6fffd2dae1ec886d8a3bPatch, Third Party Advisory
https://github.com/PHPFusion/PHPFusion/commit/fda266c3bb35c650a8c4c51b6923abdfb66ef5cdPatch, Third Party Advisory

Timeline

Published: Apr 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28280?

CSRF + Cross-site scripting (XSS) vulnerability in search.php in PHPFusion 9.03.110 allows remote attackers to inject arbitrary web script or HTML

How severe is CVE-2021-28280?

CVE-2021-28280 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28280?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28280?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST