Answer in brief
CVE-2026-105206 records a Medium severity (CVSS 5.3) vulnerability in ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User Service. The current sources do not mark it as known exploited. The current feed maps zitadel/zitadel (generic), zitadel/zitadel (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps zitadel/zitadel (generic), zitadel/zitadel (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| zitadel/zitadelgeneric | >=0 <4.17.3 | 4.17.3 |
| zitadel/zitadelgeneric | >=0 <=4.19.4 | Not reported |
Published upstream
Oct 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.