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Fencer Vulns
medium 6.1

CVE-2021-29055 json

Cross Site Scripting (XSS) vulnerability in sourcecodester School File Management System 1.0 via the Firtstname parameter to the Update Acc…

published 2022-06-23 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15701

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

Cross Site Scripting (XSS) vulnerability in sourcecodester School File Management System 1.0 via the Firtstname parameter to the Update Account form in student_profile.php.

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourcecodester.com https://www.sourcecodester.com/php/14155/school-file-management-system.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/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.