CVE-2026-8152 – Unblu Spark Open Redirect leading to DOM-Based XSS

CVE ID :CVE-2026-8152

Published : July 22, 2026, 1:16 p.m. | 29 minutes ago

Description :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.

Severity: 9.3 | CRITICAL

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