{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-28343", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-26T18:38:13.889Z", "datePublished": "2026-03-05T19:42:58.372Z", "dateUpdated": "2026-03-05T19:42:58.372Z"}, "containers": {"cna": {"title": "CKEditor: Cross-site scripting (XSS) in the HTML Support package", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93"}, {"name": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0"}], "affected": [{"vendor": "ckeditor", "product": "ckeditor5", "versions": [{"version": "< 47.6.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-05T19:42:58.372Z"}, "descriptions": [{"lang": "en", "value": "CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0."}], "source": {"advisory": "GHSA-jrqm-vmqc-gm93", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0."}], "id": "CVE-2026-28343", "lastModified": "2026-03-05T20:16:16.017", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-05T20:16:16.017", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}