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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:clevertap:clevertap_web_sdk:*:*:*:*:*:*:*:*", "matchCriteriaId": "A4F60CE8-3848-4625-82B3-64963E248307", "versionEndIncluding": "1.15.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CleverTap Web SDK version 1.15.2 and earlier is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage in the Visual Builder module. The origin validation in src/modules/visualBuilder/pageBuilder.js (lines 56-60) uses the includes() method to verify the originUrl contains \"dashboard.clevertap.com\", which can be bypassed by an attacker using a crafted subdomain"}], "id": "CVE-2026-26862", "lastModified": "2026-03-03T18:44:20.997", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-02-27T18:16:12.163", "references": [{"source": "[email protected]", "tags": ["Product"], "url": "https://github.com/CleverTap/clevertap-web-sdk/blob/cf1b65d/src/modules/visualBuilder/pageBuilder.js#L56-L60"}, {"source": "[email protected]", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/CleverTap/clevertap-web-sdk/issues/442"}, {"source": "[email protected]", "tags": ["Patch"], "url": "https://github.com/CleverTap/clevertap-web-sdk/pull/417"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-829"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.15.2]"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "web_sdk", "vendor": "clevertap"}], "created": "2026-03-02T12:07:29.693249+00:00", "updated": "2026-03-02T12:07:29.693359+00:00", "vendors": ["clevertap", "clevertap$PRODUCT$web_sdk"]}