CVE-2026-8152
Unblu Spark contains an open redirect vulnerability that can be escalated to a DOM-based cross-site scripting (XSS) attack. When Unblu Spark is deployed with com.unblu.identifier.siteEmbeddedSetup=true, it runs in the same origin as the host application. Any JavaScript injected through this vulnerability therefore executes with full access to the host application's cookies, DOM, and same-origin APIs — an attacker can reach all resources of the host application, not just Unblu's. This expanded blast radius is the reason on-premises deployments using this configuration are rated CRITICAL.
- Score
- CVSS 4.0 9.3 Critical
- Status
- Deferred - vulnerability@ncsc.ch
- Published
- 2026-07-22
- Last modified
- 2026-10-24
- Weaknesses
- CWE-601, CWE-79
Affected products
References
- https://docs.unblu.com/latest/security-bulletins/#UBL-2026-001
