Advisory details:
github_osv / GHSA-w3p3-7cjg-vgfw
| Advisory ID | github_osv/GHSA-w3p3-7cjg-vgfw |
| Aliases |
CVE-2026-9799
|
| Summary | Keycloak allows unauthorized access to resources via uma permission ticket bypass ### Description A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access (UMA) permission ticket for one resource can exploit this by using a specific permission request prefix to bypass per-resource access control. This allows the user to gain unauthorized access to all resources of that type within the same resource server, even if they do not have a ticket for those specific resources. This vulnerability requires the resource server to be configured in PERMISSIVE policy enforcement mode and affects typed resources with ownerManagedAccess enabled, where no explicit policy protects the resource type. The primary consequence is unauthorized information disclosure or modification of resources. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.1 |
| Risk | 2.0 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 4.6 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-w3p3-7cjg-vgfw/GHSA-w3p3-7cjg-vgfw.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:30049 | ||
| https://access.redhat.com/errata/RHSA-2026:30050 | ||
| https://github.com/keycloak/keycloak | ||
| https://github.com/keycloak/keycloak/security/advisories/GHSA-w3p3-7cjg-vgfw | ||
| CVE-2026-9799 | Advisory | https://access.redhat.com/security/cve/CVE-2026-9799 |
| CVE-2026-9799 | https://nvd.nist.gov/vuln/detail/CVE-2026-9799 | |
| RHSA-2026:30083 | Advisory | https://access.redhat.com/errata/RHSA-2026:30083 |
| RHSA-2026:30084 | Advisory | https://access.redhat.com/errata/RHSA-2026:30084 |
| show_bug.cgi?id=2482471 | Bug | https://bugzilla.redhat.com/show_bug.cgi?id=2482471 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
There are no SSVC decisions available.