{"api_version":"1","generated_at":"2026-07-23T12:06:39+00:00","cve":"CVE-2026-8152","urls":{"html":"https://cve.report/CVE-2026-8152","api":"https://cve.report/api/cve/CVE-2026-8152.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-8152","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-8152"},"summary":{"title":"Unblu Spark Open Redirect leading to DOM-Based XSS","description":"Unblu Spark contains an open redirect vulnerability that can be escalated to a DOM-based cross-site scripting (XSS) attack.\n\n\nWhen 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. 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The defaults restrict redirects to the current origin (document.location.origin).","time":"","lang":"en"}],"workarounds":[{"source":"CNA","title":"","value":"If you cannot upgrade immediately, either of the following measures prevents exploitation:\n\n  *  Enable the built-in Content Security Policy by setting com.unblu.contentsecuritypolicy.mode=on. The CSP blocks the injected JavaScript from executing and prevents the exploit from succeeding. Note: this protection is only effective on Unblu Spark 7.56.2 or later in the 7.x series and 8.19.1 or later in the 8.x series, where unsafe-inline was removed from the script source policy. Earlier versions ship a CSP that still permits unsafe-inline and are not protected by this workaround.\n  *  Configure a WAF rule to block requests that carry a malicious payload in the redirectOnFailure parameter (in particular, values containing a javascript: scheme or obfuscated variants such as java%0ascript:).","time":"","lang":"en"}],"exploits":[],"credits":[{"source":"CNA","value":"Kenan Karalioglu (chef_shell) via YesWeHack","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-8152","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-07-22T18:54:56.321413Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-07-22T18:55:07.732Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"affected","platforms":["On-premises","Cloud"],"product":"Unblu Spark","vendor":"Unblu inc.","versions":[{"lessThanOrEqual":"8.36.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"8.36.1-hotfix.0","versionType":"semver"},{"status":"unaffected","version":"8.37.0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Kenan Karalioglu (chef_shell) via YesWeHack"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div><div>Unblu Spark contains an open redirect vulnerability that can be escalated to a DOM-based cross-site scripting (XSS) attack.</div><br><div>When Unblu Spark is deployed with <code>com.unblu.identifier.siteEmbeddedSetup=true</code>, it runs in the same origin as the host application. 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This expanded blast radius is the reason on-premises deployments using this configuration are rated CRITICAL."}],"impacts":[{"capecId":"CAPEC-588","descriptions":[{"lang":"en","value":"CAPEC-588 — DOM-Based XSS"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"On-premises deployment (same site)"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"Cloud deployment"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","description":"CWE-601 URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-22T12:21:28.977Z","orgId":"455daabc-a392-441d-aa46-37d35189897c","shortName":"NCSC.ch"},"references":[{"name":"Unblu Security Advisories","tags":["vendor-advisory"],"url":"https://docs.unblu.com/latest/security-bulletins/#UBL-2026-001"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div>In the fix versions listed above, Unblu Spark validates all user-supplied redirects through the same redirect filter.</div><br><div>After upgrading, please review your redirect filter configuration. The defaults restrict redirects to the current origin (<code>document.location.origin</code>).</div><div><br></div><br>"}],"value":"In the fix versions listed above, Unblu Spark validates all user-supplied redirects through the same redirect filter.\n\n\nAfter upgrading, please review your redirect filter configuration. The defaults restrict redirects to the current origin (document.location.origin)."}],"source":{"advisory":"UBL-2026-001","discovery":"EXTERNAL"},"title":"Unblu Spark Open Redirect leading to DOM-Based XSS","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<div>If you cannot upgrade immediately, either of the following measures prevents exploitation:</div><div><ul><li>Enable the built-in Content Security Policy by setting&nbsp;<code>com.unblu.contentsecuritypolicy.mode=on</code>. The CSP blocks the injected JavaScript from executing and prevents the exploit from succeeding. <b>Note:</b>&nbsp;this protection is only effective on Unblu Spark <b>7.56.2 or later</b>&nbsp;in the 7.x series and <b>8.19.1 or later</b>&nbsp;in the 8.x series, where&nbsp;<code>unsafe-inline</code>&nbsp;was removed from the script source policy. Earlier versions ship a CSP that still permits&nbsp;<code>unsafe-inline</code>&nbsp;and are not protected by this workaround.</li><li>Configure a WAF rule to block requests that carry a malicious payload in the&nbsp;<code>redirectOnFailure</code>&nbsp;parameter (in particular, values containing a&nbsp;<code>javascript:</code>&nbsp;scheme or obfuscated variants such as&nbsp;<code>java%0ascript:</code>).</li></ul></div><br><br>"}],"value":"If you cannot upgrade immediately, either of the following measures prevents exploitation:\n\n  *  Enable the built-in Content Security Policy by setting com.unblu.contentsecuritypolicy.mode=on. The CSP blocks the injected JavaScript from executing and prevents the exploit from succeeding. Note: this protection is only effective on Unblu Spark 7.56.2 or later in the 7.x series and 8.19.1 or later in the 8.x series, where unsafe-inline was removed from the script source policy. Earlier versions ship a CSP that still permits unsafe-inline and are not protected by this workaround.\n  *  Configure a WAF rule to block requests that carry a malicious payload in the redirectOnFailure parameter (in particular, values containing a javascript: scheme or obfuscated variants such as java%0ascript:)."}],"x_generator":{"engine":"manual"}}},"cveMetadata":{"assignerOrgId":"455daabc-a392-441d-aa46-37d35189897c","assignerShortName":"NCSC.ch","cveId":"CVE-2026-8152","datePublished":"2026-07-22T12:21:28.977Z","dateReserved":"2026-05-08T08:12:13.325Z","dateUpdated":"2026-07-22T18:55:07.732Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-22 13:16:38","lastModifiedDate":"2026-07-22 19:17:14","problem_types":["CWE-79","CWE-601","CWE-601 CWE-601 URL Redirection to Untrusted Site ('Open Redirect')","CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"],"metrics":{"cvssMetricV40":[{"source":"vulnerability@ncsc.ch","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-22T18:54:56.321413Z","id":"CVE-2026-8152","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"8152","Ordinal":"1","Title":"Unblu Spark Open Redirect leading to DOM-Based XSS","CVE":"CVE-2026-8152","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"8152","Ordinal":"1","NoteData":"Unblu Spark contains an open redirect vulnerability that can be escalated to a DOM-based cross-site scripting (XSS) attack.\n\n\nWhen 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.","Type":"Description","Title":"Unblu Spark Open Redirect leading to DOM-Based XSS"}]}}}