A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Enrollment Management System in PHP and PayPal Free Sourc…

published 2021-11-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27752

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits: 1; Exploit-DB

A Stored Cross Site Scripting (XSS) vulnerability exists in Sourcecodester Online Enrollment Management System in PHP and PayPal Free Source Code 1.0 in the Add-Users page via the Name parameter.

Timeline

2021-11-08 Published
2021-12-01 First public exploit (EDB-50557)

Exploit prediction

1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-50557 Online Enrollment Management System in PHP and PayPal 1.0 - 'U_NAME' Stored Cross-Site Scripting webapps, 2021-12-01
packetstormsecurity.com http://packetstormsecurity.com/files/165106/Online-Enrollment-Management-System-In-PHP-And-PayPal-1.0-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/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

packetstormsecurity.com /files/165106/Online-Enrollment-Management-System-In-PHP-And-PayPal-1.0-Cross-Site-Scripting.html
exploit, third-party-advisory, vdb-entry
medium.com /%40J03KR/cve-2021-40577-ec96a831ba71

Sources

CVE List CVE-2021-40577
NVD CVE-2021-40577

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary