CVE-2026-105206

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 61/100
Published: 2026-10-04 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

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

Description

ZITADEL 3.0.0 through 3.4.15 and 4.x before 4.17.3 contains an incorrect authorization flaw in the User Service API, which verifies user.read against the caller's organization rather than the organization owning the target user. An authenticated member holding org-scoped user.read can query GET /v2/users/{userId}/authentication_methods to learn which authentication method types users in other organizations have registered.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
zitadel zitadel 4.0.0 < 4.17.3
zitadel zitadel 3.0.0
zitadel zitadel 4.0.0 < 4.17.3
zitadel zitadel 3.0.0

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.28%
Raw Score 0.002790
Percentile 20.3%
Date 2026-10-29

Intelligence Sources

mitre ref →
nvd ref →