CVE-2026-41518

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{"affected": [{"affectedData": [{"product": "chartbrew", "vendor": "chartbrew", "versions": [{"status": "affected", "version": ">= 4.9.0, < 5.0.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In versions 4.9.0 through 5.0.0, an authenticated user with project-editor permissions can store arbitrary HTML/JavaScript in the `ChartDatasetConfig.legend` field. The payload is persisted verbatim in the database, propagated through the Chart.js rendering pipeline, and injected into the tooltip DOM element via an unguarded `innerHTML` assignment in `ChartTooltip.js`. Every unauthenticated viewer of the public dashboard triggers JavaScript execution on page load \u2014 no hover interaction is required. Browser-based Playwright verification confirmed `alert('localhost')` fires immediately and `<img src=\"x\" onerror=\"alert(document.domain)\">` is present in the `#chartjs-tooltip` DOM element. Version 5.0.1 contains a fix."}], "id": "CVE-2026-41518", "lastModified": "2026-06-17T10:46:49.690", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-41518", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-05T19:33:37.956153Z", "version": "2.0.3"}}]}, "published": "2026-06-04T20:16:57.960", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/chartbrew/chartbrew/security/advisories/GHSA-6q2j-365c-7gqf"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/chartbrew/chartbrew/security/advisories/GHSA-6q2j-365c-7gqf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.9.0,5.0.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "chartbrew", "source": "cna", "vendor": "chartbrew"}, "product": "chartbrew", "vendor": "chartbrew"}], "created": "2026-06-04T21:30:23.593908+00:00", "updated": "2026-06-04T22:00:14.834115+00:00", "vendors": ["chartbrew", "chartbrew$PRODUCT$chartbrew"]}