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Fencer Vulns
medium 5.4

CVE-2021-28424 json

A stored cross-site scripting (XSS) vulnerability in Teachers Record Management System 1.0 allows remote authenticated users to inject arbi…

published 2021-07-01 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15103

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

A stored cross-site scripting (XSS) vulnerability in Teachers Record Management System 1.0 allows remote authenticated users to inject arbitrary web script or HTML via the 'email' POST parameter in adminprofile.php.

Exploit prediction

1.31% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • nhattruong.blog https://nhattruong.blog/2021/05/22/cve-2021-28424-teachers-record-management-system-1-0-email-stored-cross-site-scripting-xss-vulnerability-authenticated/ referenced PoC, tagged "exploit" by a source, unverified
  • exploit-db.com https://www.exploit-db.com/exploits/50019 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com https://packetstormsecurity.com/files/163171/Teachers-Record-Management-System-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

Sources

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.