Answer in brief
CVE-2026-4630 records a Medium severity (CVSS 6.8) vulnerability in Keycloak Protection API allows authenticated clients to access and modify resources owned by other Resource Servers. The current sources do not mark it as known exploited. The current feed maps org.keycloak:keycloak-services (maven), org.keycloak:keycloak-services (maven). 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 6.8. 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 org.keycloak:keycloak-services (maven), org.keycloak:keycloak-services (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| org.keycloak:keycloak-servicesmaven | <26.6.2 | 26.6.2 |
| org.keycloak:keycloak-servicesmaven | >=0 <26.6.2 | 26.6.2 |
Published upstream
May 19, 2026
Evidence: source:osv:source_dates:source-dates:recordSource modified
Aug 26, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Jun 30, 2026
Keycloak's Authorization Services feature exposes a User-Managed Access Protection API that include an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same realm, an authenticated client could bypass authorization checks. This allows the client to perform unauthorized GET, PUT, and DELETE operations on resources, leading to information disclosure and potential unauthorized modification or deletion of data.
Quoted source text, attributed separately from HOL analysis.