CVE-2026-6272 Details
Description
A client holding only a read JWT scope can still register itself as a signal provider through the production kuksa.val.v2 OpenProviderStream API by sending ProvideSignalRequest. 1. Obtain any valid token with only read scope. 2. Connect to the normal production gRPC API (kuksa.val.v2). 3. Open OpenProviderStream. 4. Send ProvideSignalRequest for a target signal ID. 5. Wait for the broker to forward GetProviderValueRequest. 6. Reply with attacker-controlled GetProviderValueResponse. 7. Other clients performing GetValue / GetValues for that signal receive forged data.
A vulnerability exists in the Eclipse KUKSA Databroker's implementation of the OpenProviderStream API, specifically in versions 0.5.0 prior to 0.6.0. This vulnerability allows a client with only read JWT scope to register as a signal provider. The exploitation involves sending a ProvideSignalRequest for a target signal ID, which can then be used to inject forged data into the system. This is achieved by responding to a GetProviderValueRequest with an attacker-controlled GetProviderValueResponse, which is then disseminated to other clients requesting the same signal.
Users are advised to upgrade to version 0.6.1.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 24, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gitlab.eclipse.org/security/cve-assignment/-/issues/98 | CISA-ADP | |
| https://gitlab.eclipse.org/security/cve-assignment/-/issues/98 | [email protected] |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | New CVE Received | [email protected] |