CVE-2026-37503

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:v2board:v2board:*:*:*:*:*:*:*:*", "matchCriteriaId": "5514969D-29B0-4D10-A1F8-11154F0BCAF6", "versionEndIncluding": "1.7.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross-Site Scripting (XSS) in V2Board thru 1.7.4. The custom_html field in theme configuration is rendered using Blade unescaped output in public/theme/v2board/dashboard.blade.php. An admin can inject arbitrary JavaScript via the saveThemeConfig API. All site visitors execute the payload, enabling cookie theft, session hijacking, or phishing."}, {"lang": "es", "value": "Cross-Site Scripting (XSS) en V2Board hasta 1.7.4. El campo custom_html en la configuraci\u00f3n del tema se renderiza utilizando la salida sin escapar de Blade en public/theme/v2board/dashboard.blade.php. Un administrador puede inyectar JavaScript arbitrario a trav\u00e9s de la API saveThemeConfig. Todos los visitantes del sitio ejecutan la carga \u00fatil, lo que permite el robo de cookies, el secuestro de sesiones o phishing."}], "id": "CVE-2026-37503", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.7, "impactScore": 4.7, "source": "cve@mitre.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.7, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-37503", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-01T19:40:04.043781Z", "version": "2.0.3"}}]}, "published": "2026-05-01T16:16:30.490", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://gist.github.com/sgInnora/1330e1a82caa79906eec55eeff2c99b9"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://github.com/v2board/v2board"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.7.4]"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "v2board", "vendor": "v2board"}], "created": "2026-05-01T21:00:08.406107+00:00", "title": "Cross\u2011Site Scripting via Unescaped Theme Configuration in V2Board 1.7.4", "updated": "2026-05-02T08:15:16.308894+00:00", "vendors": ["v2board", "v2board$PRODUCT$v2board"]}