CVE-2026-11855

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Simple Membership", "vendor": "Unknown", "versions": [{"lessThan": "4.7.5", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "contact@wpscan.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Simple Membership WordPress plugin before 4.7.5 does not verify the authenticity of Stripe webhook requests when no signing secret is configured, nor escape a value taken from them before outputting it in an administrator notice, allowing unauthenticated attackers to inject arbitrary web scripts that execute in the context of a logged-in administrator."}, {"lang": "es", "value": "El plugin de WordPress Simple Membership, en versiones anteriores a la 4.7.5, no verifica la autenticidad de las solicitudes de webhook de Stripe cuando no se ha configurado ning\u00fan secreto de firma, ni escapa los valores extra\u00eddos de dichas solicitudes antes de mostrarlos en un aviso para el administrador, lo que permite a atacantes no autenticados inyectar scripts web arbitrarios que se ejecutan en el contexto de un administrador que ha iniciado sesi\u00f3n."}], "id": "CVE-2026-11855", "lastModified": "2026-07-06T18:37:01.220", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "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:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-11855", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-06T12:01:19.019388Z", "version": "2.0.3"}}]}, "published": "2026-07-06T08:16:35.180", "references": [{"source": "contact@wpscan.com", "url": "https://wpscan.com/vulnerability/217cb606-a0f2-4427-9262-cfe1cc90474e/"}], "sourceIdentifier": "contact@wpscan.com", "vulnStatus": "Deferred"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.7.5)"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}]}, "original": {"product": "Simple Membership", "source": "cna", "vendor": "Unknown"}, "product": "simple_membership", "vendor": "wordpress-extensions"}], "created": "2026-07-06T17:30:16.515894+00:00", "updated": "2026-11-11T14:35:36.920975+00:00", "vendors": ["wordpress-extensions", "wordpress-extensions$PRODUCT$simple_membership"], "weaknesses": ["CWE-79"]}