ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User Service
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.
CVE-2026-105206
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-105206
zitadel
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
zitadel
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "zitadel",
"product": "zitadel",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "4.17.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.17.3",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "zitadel",
"product": "zitadel",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "4.19.4"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-105206
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #8632 · Revision 1
- Added to Heist Feed
- Publisher date