CVE-2026-8152
CriticalCVSS 9.3Exploitation Probability (EPSS)
Low risk34th percentile - higher than 34% of all known CVEs
Summary
Unblu Spark contains an open redirect vulnerability that can be escalated to a DOM-based XSS attack. When deployed with a specific configuration, it runs in the same origin as the host application, allowing an attacker full access to its resources.
Risk Assessment
The risk is critical for on-premises deployments with this configuration, as an attacker can compromise cookies, DOM, and APIs of the host application, leading to full compromise.
Recommendation
Immediately update Unblu Spark to a patched version and review the siteEmbeddedSetup configuration.
Original NVD description (English source)
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.