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Fencer Vulns
medium 6.1

CVE-2021-41878 json

A reflected cross-site scripting (XSS) vulnerability exists in the i-Panel Administration System Version 2.0 that enables a remote attacker…

published 2021-10-04 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28876

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.9%
EPSS 9.9% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

A reflected cross-site scripting (XSS) vulnerability exists in the i-Panel Administration System Version 2.0 that enables a remote attacker to execute arbitrary JavaScript code in the browser-based web console and it is possible to insert a vulnerable malicious button.

Timeline

  1. Published
  2. First public exploit (EDB-50418)

Exploit prediction

9.91% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50418 i-Panel Administration System 2.0 - Reflected Cross-site Scripting (XSS) webapps, 2021-10-15
  • Nuclei template i-Panel Administration System 2.0 - Cross-Site Scripting nuclei detection template
  • cybergroot.com https://cybergroot.com/cve_submission/2021-1/XSS_i-Panel_2.0.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/164519/i-Panel-Administration-System-2.0-Cross-Site-Scripting.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.