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Servers and applications

CVE-2021-36190

A unintended proxy or intermediary ('confused deputy') in Fortinet FortiWeb version 6.4.1 and below, 6.3.15 and below allows an unauthenticated attacker to access protected hosts via crafted HTTP requests.

Severity
Medium 6.3
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-2021-36190
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-36190