UpHeron
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Servers and applications

CVE-2025-57770

User Enumeration in Login UI

Severity
Medium 5.3
Published
22 Aug 2025
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.71.14, 2.71.15, 3.4.0, 4.0.3
Also known as
GHSA-g9c3-xh6v-fr86
Sources
NVD, Project advisories (GitHub)

Description

The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Versions 4.0.0 to 4.0.2, 3.0.0 to 3.3.6, and all versions prior to 2.71.15 are vulnerable to a username enumeration issue in the login interface. The login UI includes a security feature, Ignoring unknown usernames, that is intended to prevent username enumeration by returning a…

Affected software

SoftwareAffected versions
ZITADELServers and applications · cpe:a:zitadel:zitadel
  • Every version before 2.71.15
  • From 3.0.0 before 3.4.0
  • From 4.0.0 before 4.0.3
ZITADELServers and applications · github:zitadel/zitadel
  • Every version before 2.71.14
  • From 3.0.0 before 3.4.0
  • From 4.0.0 before 4.0.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-57770
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-57770
  • GitHub Advisory Database https://github.com/advisories/GHSA-g9c3-xh6v-fr86
  • github.com https://github.com/zitadel/zitadel/security/advisories/GHSA-g9c3-xh6v-fr86