CVE-2025-25299

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{"affected": [{"affectedData": [{"product": "ckeditor5", "vendor": "ckeditor", "versions": [{"status": "affected", "version": "@ckeditor/ckeditor5-real-time-collaboration: >= 41.3.0, < 44.2.1"}, {"status": "affected", "version": "ckeditor5-premium-features: >= 42.0.0, < 44.2.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. During a recent internal audit, a Cross-Site Scripting (XSS) vulnerability was discovered in the CKEditor 5 real-time collaboration package. This vulnerability affects user markers, which represent users' positions within the document. It can lead to unauthorized JavaScript code execution, which might happen with a very specific editor and token endpoint configuration. This vulnerability affects only installations with Real-time collaborative editing enabled. The problem has been recognized and patched. The fix is available in version 44.2.1 (and above). Users are advised to upgrade. There are no known workarounds for this vulnerability."}, {"lang": "es", "value": "CKEditor 5 es un editor de texto enriquecido de JavaScript moderno con una arquitectura MVC. Durante una auditor\u00eda interna reciente, se descubri\u00f3 una vulnerabilidad de Cross-Site Scripting (XSS) en el paquete de colaboraci\u00f3n en tiempo real de CKEditor 5. Esta vulnerabilidad afecta a los marcadores de usuario, que representan las posiciones de los usuarios dentro del documento. Puede provocar la ejecuci\u00f3n no autorizada de c\u00f3digo JavaScript, lo que podr\u00eda ocurrir con una configuraci\u00f3n de endpoint de token y editor muy espec\u00edfica. Esta vulnerabilidad afecta solo a las instalaciones con la edici\u00f3n colaborativa en tiempo real habilitada. El problema se ha reconocido y se ha corregido. La soluci\u00f3n est\u00e1 disponible en la versi\u00f3n 44.2.1 (y posteriores). Se recomienda a los usuarios que actualicen. No existen workarounds para esta vulnerabilidad."}], "id": "CVE-2025-25299", "lastModified": "2026-06-17T09:00:38.570", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "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": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/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": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-25299", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-02-20T19:47:00.220316Z", "version": "2.0.3"}}]}, "published": "2025-02-20T20:15:46.853", "references": [{"source": "security-advisories@github.com", "url": "https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/real-time-collaboration/real-time-collaboration.html"}, {"source": "security-advisories@github.com", "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v44.2.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-j3mm-wmfm-mwvh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-80"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2025-07-12T15:26:13.099328+00:00", "updated": "2025-07-12T15:26:13.099391+00:00", "vendors": ["ckeditor", "ckeditor$PRODUCT$ckeditor5"]}