UpHeron
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Servers and applications

CVE-2023-44399

Password reset does not respect the "Ignoring unknown usernames" setting

Severity
Medium 5.3
Published
10 Oct 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.37.2
Also known as
GHSA-v683-rcxx-vpff
Sources
NVD, Project advisories (GitHub)

Description

ZITADEL provides identity infrastructure. In versions 2.37.2 and prior, ZITADEL administrators can enable a setting called "Ignoring unknown usernames" which helps mitigate attacks that try to guess/enumerate usernames. While this settings was properly working during the authentication process it did not work correctly on the password reset flow. This meant that even if this feature was active…

Affected software

SoftwareAffected versions
ZITADELServers and applications · cpe:a:zitadel:zitadel
  • Every version up to 2.37.2
ZITADELServers and applications · github:zitadel/zitadel
  • Every version before 2.37.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-44399
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-44399
  • GitHub Advisory Database https://github.com/advisories/GHSA-v683-rcxx-vpff
  • github.com https://github.com/zitadel/zitadel/security/advisories/GHSA-v683-rcxx-vpff