A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links.
This could lead to unauthorized access or account compromise.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 5
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Redhat Build_Of_Keycloak
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*
|
— | — |
|
Redhat Build_Of_Keycloak
cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:*
|
— | — |
|
Redhat Build_Of_Keycloak
cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:*
|
— | — |
|
Redhat Build_Of_Keycloak
cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:*
|
— | — |
|
Redhat Build_Of_Keycloak
cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:*
|
— | — |
References 6
https://access.redhat.com/errata/RHSA-2026:6475
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:6476
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:6477
secalert@redhat.com
https://access.redhat.com/errata/RHSA-2026:6478
secalert@redhat.com
https://access.redhat.com/security/cve/CVE-2026-4325
secalert@redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2448351
secalert@redhat.com