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Vulnerabilities

Vulnerability · CVE-2025-57770

The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration.

Published Aug 22, 2025 · catalog updated Aug 22, 2025 · The open-source identity infrastructure

Check if you run it

No confirmed exploitation is on record for CVE-2025-57770. EPSS is 0.39%. Act only if a listed version of The open-source identity infrastructure is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The open-source identity infrastructure).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.39%
Remediation
Version ranges on file
Affected products
vendor zitadel zitadel 3.0.0, < 3.4.0

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 generic response for both valid and invalid usernames. This vulnerability allows an unauthenticated attacker to bypass this protection by submitting arbitrary userIDs to the select account page and dist

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor zitadel zitadel 3.0.0, < 3.4.03.0.0, < 3.4.0

How to fix CVE-2025-57770

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-57770. EPSS is 0.39%. Act only if a listed version of The open-source identity infrastructure is installed.

Which versions are affected?

Compare what you have installed with zitadel zitadel 3.0.0, < 3.4.0 3.0.0, < 3.4.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 22, 2025 · EUVD

    Detected

    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 ge

  2. Aug 22, 2025 · EUVD

    Updated

    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 ge

Sources

  • CVE.orgVulnerability recordCVE-2025-57770

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-57770

    30-day exploitation probability 0.39%

    first.org
  • EUVDVulnerability recordEUVD-2025-25596

    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 inc

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.