vciy

CVE-2024-41952

INDEX BUILT · 2026-09-20

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Zitadel has an "Ignoring unknown usernames" vulnerability

CVE-2024-419524 of 4 sources documented this
19

rank 19 = 0 + 13 + 0 + 6 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00633  ·  without this subject the record ranks 19

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.3, from NVD  ·  without this subject the record ranks 6

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 19

How much of the world it touches

NVD CPE configurations

6 products in the CPE ranges  ·  without this subject the record ranks 13

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 19

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$7,600over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$7,600 = $4.99M incident cost x 0.24048551839932833 exposure x 0.00633 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.00633EPSSNOT IN KEVas of 2026-09-20
Severity5.3 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2024-08-01, 683 days at 0.01, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running zitadel? Check your version

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactPartial confidentiality lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-203 Observable Discrepancyreceipt
Published consequencesCWE-203: Confidentiality, Access Control: Read Application Data, Bypass Protection Mechanism; Confidentiality: Read Application Data[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchzitadel 2.53.9; zitadel 2.54.8; zitadel 2.55.5; zitadel 2.56.2receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA5.3 MEDIUMreceipt
CVSS, NVD5.3 MEDIUMreceipt
Exploit probability0.00633 · top 51% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byGitHub_Mreceipt
Recorded changes18 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productzitadelreceipt
Published rangeszitadel >= 2.53.0 < 2.53.9; zitadel >= 2.54.0 < 2.54.8; zitadel >= 2.55.0 < 2.55.5; zitadel >= 2.56.0 < 2.56.2receipt
Show all 6 published ranges
zitadel >= 2.53.0 < 2.53.9
zitadel >= 2.54.0 < 2.54.8
zitadel >= 2.55.0 < 2.55.5
zitadel >= 2.56.0 < 2.56.2
zitadel 2.57.0
zitadel 2.58.0

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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What it is stated by the CNA

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. receipt

NVD's analysis a second authority

severity
5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
weakness
CWE-203
affected versions
zitadel >= 2.53.0 < 2.53.9; zitadel >= 2.54.0 < 2.54.8; zitadel >= 2.55.0 < 2.55.5; and 3 more, listed in full below
also scored by
[email protected] 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

check it yourself github.com github.com github.com github.com github.com github.com +7 morereceipt

Movement the material steps

1 Aug 20240.00046
17 Mar 20250.00241 · scoring model v2025.03.14
15 Jun 20260.00633 · scoring model v2026.06.15
Show all 18 observations
1 Aug 20240.00046
9 Jan 20250.00090
17 Mar 20250.00241
29 Mar 20250.00455
30 Mar 20250.00241
5 Apr 20250.00262
15 Apr 20250.00051
16 Apr 20250.00065
26 Apr 20250.00073
17 May 20250.00079
27 May 20250.00093
8 Sep 20250.0067
9 Sep 20250.00494
18 Nov 20250.00477
21 Nov 20250.00494
4 Dec 20250.0067
20 Dec 20250.00909
15 Jun 20260.00633

18 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00633Published2024-07-31Index as of2026-06-15

The record had been public for 1 year, 10 months when this index was last written.

Published 2024-07-31 receipt · Index as of 2026-06-15 derived

Siblings and hubs

Records related to this one

Its defect family

zitadel

Of the 2 records in this family, this is the only one whose title names has ignoring unknown.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

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What usually comes next

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