How severe is CVE-2025-31124?

CVE-2025-31124 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-31124 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-31124?

CVE-2025-31124 affects Zitadel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-31124?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-31124 have an EU (EUVD) identifier?

Yes. CVE-2025-31124 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8871.

When was CVE-2025-31124 published?

CVE-2025-31124 was published on 2025-03-31 and last updated on 2026-06-17.

CVE-2025-31124

CVE-2025-31124 is a medium-severity vulnerability in Zitadel with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-8871
Weakness: CWE-200
Affected product: Zitadel
Published: 2025-03-31
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-31124?: 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.
How severe is CVE-2025-31124?: CVE-2025-31124 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-31124 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-31124?: CVE-2025-31124 affects Zitadel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-31124?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-31124 have an EU (EUVD) identifier?: Yes. CVE-2025-31124 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-8871.
When was CVE-2025-31124 published?: CVE-2025-31124 was published on 2025-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*

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