CVE-2024-41952

Zitadel has an "Ignoring unknown usernames" vulnerability

MEDIUM
5.3
CVSS Score
Published: July 31, 2024 at 04:30 PM UTC
Updated: June 17, 2026 at 07:48 AM UTC
1 product affected across 1 vendorZitadel

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Zitadel is an open source identity management system. 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". Due to a implementation change to prevent deadlocks calling the database, the flag would not be correctly respected in all cases and an attacker would gain information if an account exist within ZITADEL, since the error message shows "object not found" instead of the generic error message. This vulnerability is fixed in 2.58.1, 2.57.1, 2.56.2, 2.55.5, 2.54.8, and 2.53.9.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.53.9v < 2.54.8v < 2.55.5v < 2.56.2v < 2.57.1v < 2.58.12.53.0 ≤ v < 2.53.92.54.0 ≤ v < 2.54.82.55.0 ≤ v < 2.55.52.56.0 ≤ v < 2.56.22.57.0 ≤ v < 2.57.12.58.0 ≤ v < 2.58.12.53.02.54.02.55.02.56.02.57.02.57.0 rc12.57.0 rc22.58.0
Affected range stops below 2.53.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.54.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.55.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.56.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.57.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.58.1, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-203

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