CVE-2026-26223

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This vulnerability is not mitigated by the SPIP security screen."}, {"lang": "es", "value": "SPIP anterior a 4.4.8 permite cross-site scripting (XSS) en el \u00e1rea privada a trav\u00e9s de etiquetas iframe maliciosas. La aplicaci\u00f3n no a\u00edsla correctamente en un sandbox ni escapa el contenido de iframe en el back-office, permitiendo a un atacante inyectar y ejecutar scripts maliciosos. La soluci\u00f3n a\u00f1ade un atributo sandbox a las etiquetas iframe en el \u00e1rea privada. Esta vulnerabilidad no es mitigada por la pantalla de seguridad de SPIP."}], "id": "CVE-2026-26223", "lastModified": "2026-06-17T10:25:58.300", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "disclosure@vulncheck.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26223", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-19T19:50:44.783973Z", "version": "2.0.3"}}]}, "published": "2026-02-19T16:27:15.817", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-8.html"}, {"source": "disclosure@vulncheck.com", "tags": ["Product"], "url": "https://git.spip.net/spip/spip"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.4.0,4.4.8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "SPIP", "source": "cna", "vendor": "SPIP"}, "product": "spip", "vendor": "spip"}], "analysis": {"en": {"generated_at": "2026-04-16T16:55:09.627130+00:00", "value": {"mitigation_remediation": ["Apply the official SPIP 4.4.8 update or later to include the iframe sandbox fix.", "For sites that cannot update immediately, remove or disable iframe tags in the back\u2011office editor or add manual sanitization to block script execution.", "Verify that the back\u2011office remains accessible only to trusted administrators and review role\u2011based access controls to minimize the number of users who can deposit content that might include iframes."], "summary": {"action": "Immediate Update", "impact": "Cross\u2011Site Scripting in SPIP back\u2011office via iframe tags"}, "threat_synthesis": {"affected_systems": "The vulnerability affects the SPIP CMS platform for all releases older than 4.4.8. Administrators operating any of those versions are at risk; newer releases incorporate a sandbox attribute on all iframe elements in the private area, eliminating the flaw.", "description_and_impact": "SPIP versions prior to 4.4.8 allow malicious code to be injected into the back\u2011office through iframe tags because the application fails to escape or sandbox iframe content. This cross\u2011site scripting flaw is identified as CWE\u201179 and can enable an attacker to run arbitrary scripts in the context of the private area, potentially exfiltrating credentials, injecting malware, and modifying or deleting content.", "risk_and_exploitability": "The issue is scored CVSS 5.1, indicating moderate severity, and has an EPSS score of less than 1\u202f% meaning current exploitation activity is expected to be very low. It is not listed in the CISA KEV catalog. Exploitation requires authenticated access to the back\u2011office, so the attack surface is limited to users with administrative or privileged session rights. Once an attacker is inside the private area, they can craft payloads that exploit the unsanitized iframe tags and run scripts within the site\u2019s context."}}}}, "created": "2026-02-20T10:06:29.872407+00:00", "updated": "2026-04-16T17:00:09.385811+00:00", "vendors": ["spip", "spip$PRODUCT$spip"]}