---
title: "CVE-2026-105209: ZITADEL - Broken Access Control"
description: "ZITADEL 3.x < 3.4.15 and 4.x < 4.17.1 contain an improper authorization vulnerability caused by insufficient organization verification in passkey or passwordless enrollment code issuance, letting attackers with user-write permission in one organization take over accounts in another organization, exploit requires user-write permission in one organization."
url: https://panop.io/threat-heartbeat/CVE-2026-105209/
---

# CVE-2026-105209 ZITADEL - Broken Access Control

ZITADEL 3.x < 3.4.15 and 4.x < 4.17.1 contain an improper authorization vulnerability caused by insufficient organization verification in passkey or passwordless enrollment code issuance, letting attackers with user-write permission in one organization take over accounts in another organization, exploit requires user-write permission in one organization.

CVSS base score 9.6 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105209)

## Details

Type

Broken Access Control

Impact

Broken Access Control

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Published

4 October 2026

Updated

15 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Upgrade to versions 3.4.15, 4.17.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105209](https://nvd.nist.gov/vuln/detail/CVE-2026-105209)
- [https://github.com/zitadel/zitadel/security/advisories/GHSA-pq2q-2c6r-75c4](https://github.com/zitadel/zitadel/security/advisories/GHSA-pq2q-2c6r-75c4)
- [https://www.vulncheck.com/advisories/zitadel-before-3.4.15-and-4.17.1-cross-organization-account-takeover-via-passkey-enrollment](https://www.vulncheck.com/advisories/zitadel-before-3.4.15-and-4.17.1-cross-organization-account-takeover-via-passkey-enrollment)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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