UpHeron
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Servers and applications

CVE-2005-2021

Cross-site scripting (XSS) vulnerability in cPanel 9.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the user parameter in the login page.

Severity
Medium 4.3
Published
20 Jun 2005
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.7% in the next 30 daysHigher than 86% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Change some data
CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
Sources
NVD

Affected software

SoftwareAffected versions
cPanel & WHMServers and applications · cpe:a:cpanel:cpanel
  • Version 9.1
  • Version 9.0
  • Version 8.0
  • Version 7.0
All 12 release lines
  • Version 5.0
  • Version 5.3
  • Version 6.0
  • Version 6.2
  • Version 6.4
  • Version 6.4.1
  • Version 6.4.2
  • Version 6.4.2_stable_48
  • Version 7.0
  • Version 8.0
  • Version 9.0
  • Version 9.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2005-2021
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2005-2021