Home/CVE/Zitadel is open-source identity infrastructure software. ZITADEL administrators can enable a setting called "Ignoring un
CVE

CVE-2025-31124

Zitadel is open-source identity infrastructure software. ZITADEL administrators can enable a setting called "Ignoring un

Zitadel is open-source identity infrastructure software. ZITADEL administrators can enable a setting called "Ignoring unknown usernames" which helps mitigate attacks that try to guess/enumerate usernames. If enabled, ZITADEL will show the password prompt even if the user doesn't exist and report "Username or Password invalid".

While the setting was correctly respected during the login flow, the user's username was normalized leading to a disclosure of the user's existence. This vulnerability is fixed in 2.71.6, 2.70.8, 2.69.9, 2.68.9, 2.67.13, 2.66.16, 2.65.7, 2.64.6, and 2.63.9.

MEDIUM · CVSS 5.3 EPSS 0.01045
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-203Observable Discrepancy
CWE-204Observable Response Discrepancy
▤

Affected Products & Versions

9
zitadel< 2.63.9
zitadel>= 2.64.0 and < 2.64.6
zitadel>= 2.65.0 and < 2.65.7
zitadel>= 2.66.0 and < 2.66.16
zitadel>= 2.67.0 and < 2.67.13
zitadel>= 2.68.0 and < 2.68.9
zitadel>= 2.69.0 and < 2.69.9
zitadel>= 2.70.0 and < 2.70.8
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Mar 2025 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/zitadel/zitadel/commit/14de8ecac2afafee4975ed7ac26f3ca4a2b0f82cPatch
https://github.com/zitadel/zitadel/releases/tag/v2.63.9Release Notes
https://github.com/zitadel/zitadel/releases/tag/v2.64.6Release Notes
https://github.com/zitadel/zitadel/releases/tag/v2.65.7Release Notes
https://github.com/zitadel/zitadel/releases/tag/v2.66.16Release Notes
https://github.com/zitadel/zitadel/releases/tag/v2.67.13Release Notes
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