CVE-2021-29663

Name: CVE-2021-29663
Creator: NVD / NIST
Published: 2021-03-31T20:15:14.207+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2021-29663 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. CourseMS (aka Course Registration Management System) 2.1 is affected by cross-site scripting (XSS). When an attacker with access to an Admin account creates a Job Title in the Site area (aka the admin/add_jobs.php name parameter), they can insert an XSS payload. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

CourseMS (aka Course Registration Management System) 2.1 is affected by cross-site scripting (XSS). When an attacker with access to an Admin account creates a Job Title in the Site area (aka the admin/add_jobs.php name parameter), they can insert an XSS payload. This payload will execute whenever anyone visits the registration page.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.81%

52.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Course Registration Management System Project	Course Registration Management System	2.1

References

http://sourceforge.net/projects/coursemsProduct, Third Party Advisory
https://github.com/cptsticky/A-0day-Per-Day-Keeps-The-Cope-Away/blob/main/CVE-2021-29663Exploit, Third Party Advisory
http://sourceforge.net/projects/coursemsProduct, Third Party Advisory
https://github.com/cptsticky/A-0day-Per-Day-Keeps-The-Cope-Away/blob/main/CVE-2021-29663Exploit, Third Party Advisory

Timeline

Published: Mar 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29663?

How severe is CVE-2021-29663?

CVE-2021-29663 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29663?

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-2021-29663?

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

Scan your code now

Source: NVD / NIST