CVE-2021-39408

Name: CVE-2021-39408
Creator: NVD / NIST
Published: 2022-06-24T17:15:08.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.25%

Last modified Jun 17, 2026

CVE-2021-39408 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Cross Site Scripting (XSS) vulnerability exists in Online Student Rate System 1.0 via the page parameter on the index.php file. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

Cross Site Scripting (XSS) vulnerability exists in Online Student Rate System 1.0 via the page parameter on the index.php file

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

1.25%

65.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Online Student Rate System Project	Online Student Rate System	1.0

References

https://github.com/StefanDorresteijn/CVE-2021-39408Exploit, Third Party Advisory
https://github.com/StefanDorresteijn/CVE-2021-39408Exploit, Third Party Advisory

Timeline

Published: Jun 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39408?

Cross Site Scripting (XSS) vulnerability exists in Online Student Rate System 1.0 via the page parameter on the index.php file

How severe is CVE-2021-39408?

CVE-2021-39408 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39408?

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-2021-39408?

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

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Source: NVD / NIST