CVE-2025-31124
mediumpriority · track · 0EPSS 0.005 · 44 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (18)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
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references (34)
External citations — patches, advisories, analysis.
- https://github.com/zitadel/zitadel/commit/14de8ecac2afafee4975ed7ac26f3ca4a2b0f82ccnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.63.9cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.64.6cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.65.7cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.66.16cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.67.13cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.68.9cnnvd
- https://github.com/zitadel/zitadel/releases/tag/v2.69.9cnnvd
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