CVE detail
CVE-2026-16102
A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker with a standard user account and a limited Initial Access Token can exploit this to forge administrative roles in their access token. This allows the attacker to take over other clients, steal confidential secrets, and potentially gain full administrative control over the realm.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 19.5 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 6
- within the 30d window
- Peak daily
- 6
- highest bucket
Evidence
Source links by recency
6 source links · newest first
- https://bugzilla.redhat.com/show_bug.cgi?id=2501735bugzilla.redhat.com
No excerpt available.
Exploitbugzilla.redhat.comAug 5, 2026, 3:16 PM - https://access.redhat.com/security/cve/CVE-2026-16102access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 5, 2026, 3:16 PM - https://access.redhat.com/errata/RHSA-2026:50849access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 5, 2026, 3:16 PM - https://access.redhat.com/errata/RHSA-2026:50848access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 5, 2026, 3:16 PM - https://access.redhat.com/errata/RHSA-2026:50847access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 5, 2026, 3:16 PM - https://access.redhat.com/errata/RHSA-2026:50846access.redhat.com
No excerpt available.
Exploitaccess.redhat.comAug 5, 2026, 3:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2026-15573CVSS 8.1 · High
A flaw was found in Keycloak's Authorization Services. The component responsible for matching request paths to security policies (PathMatcher) does not properly normalize URIs bef…
- CVE-2026-16093CVSS 5.4 · Medium
Keycloak provides a mechanism called Client Policies to enforce security requirements on clients, such as requiring them to use signed JWTs for authentication. A flaw was discover…
- CVE-2026-15945CVSS 4.3 · Medium
A flaw was found in the group search functionality of the Keycloak server's administrative API. When Fine-Grained Admin Permissions (FGAP) v2 is enabled, a delegated administrator…
- CVE-2019-14838CVSS 4.9 · Medium
A flaw was found in wildfly-core before 7.2.5.GA. The Management users with Monitor, Auditor and Deployer Roles should not be allowed to modify the runtime state of the server
- CVE-2026-28369CVSS 8.7 · High
A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping…
- CVE-2026-28368CVSS 8.7 · High
A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to…