CVE-2021-29663 json
CourseMS (aka Course Registration Management System) 2.1 is affected by cross-site scripting (XSS).
published 2021-03-31 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-16137
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/cptsticky/A-0day-Per-Day-Keeps-The-Cope-Away/blob/main/CVE-2021-29663 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/cptsticky/A-0day-Per-Day-Keeps-The-Cope-Away/blob/main/CVE-2021-29663
exploit, third-party-advisory
-
sourceforge.net
/projects/coursems
product, third-party-advisory
Sources
- CVE List CVE-2021-29663
- NVD CVE-2021-29663
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