CVE-2026-105209

CRITICAL
INFO Priority: 0.02 BB Relevance: 69/100
Published: 2026-10-04 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: High
VI: High
VA: None

Description

ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains an improper authorization vulnerability: when issuing passkey or passwordless enrollment codes, it checks only the organization in the x-zitadel-orgid header, not the target user's organization. Attackers with user-write permission in one organization can obtain an enrollment code for a user in another organization on the same instance and register their own authenticator to take over that account.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
zitadel zitadel 4.0.0 < 4.17.1
zitadel zitadel 0 < 3.4.15
zitadel zitadel 4.0.0 < 4.17.1
zitadel zitadel 0 < 3.4.15

Bug Bounty Relevance

69 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

9.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

EPSS — Exploitation Probability

0.22%
Raw Score 0.002200
Percentile 12.6%
Date 2026-10-29

Intelligence Sources

mitre ref →
nvd ref →