UpHeron
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Servers and applications

CVE-2021-36191

A url redirection to untrusted site ('open redirect') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows attacker to use the device as proxy via crafted GET parameters in requests to error handlers

Severity
Medium 5.4
Published
8 Dec 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Fortinet FortiWebServers and applications · cpe:a:fortinet:fortiweb
  • Version 6.4.1
  • Version 6.4.0
  • From 6.3.0 up to 6.3.15
  • From 6.2.0 up to 6.2.6
All 8 release lines
  • From 6.0.0 up to 6.0.7
  • Version 6.1.0
  • Version 6.1.1
  • Version 6.1.2
  • From 6.2.0 up to 6.2.6
  • From 6.3.0 up to 6.3.15
  • Version 6.4.0
  • Version 6.4.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-36191
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-36191