{"id":"CVE-2026-116687","state":"PUBLISHED","title":"CKEditor: Cross-site scripting (XSS) in the engine package","description":"CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1.","publishedAt":"2026-10-27T19:33:11.074Z","updatedAt":"2026-10-27T19:33:11.074Z","severity":{"score":3.1,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ckeditor ckeditor5"],"affected":[{"vendor":"ckeditor","product":"ckeditor5","versions":[{"version":">= 29.0.0, < 47.7.4","status":"affected"},{"version":">= 48.0.0, < 48.5.1","status":"affected"}]}],"references":["https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq","https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0","https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423","https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4","https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/116xxx/CVE-2026-116687.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-116687","state":"PUBLISHED","datePublished":"2026-10-27T19:33:11.074Z","dateUpdated":"2026-10-27T19:33:11.074Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-26T20:00:59.830Z"},"containers":{"cna":{"title":"CKEditor: Cross-site scripting (XSS) in the engine package","descriptions":[{"lang":"en","value":"CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1."}],"affected":[{"vendor":"ckeditor","product":"ckeditor5","versions":[{"version":">= 29.0.0, < 47.7.4","status":"affected"},{"version":">= 48.0.0, < 48.5.1","status":"affected"}]}],"references":[{"url":"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq","name":"https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0","name":"https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0","tags":["x_refsource_MISC"]},{"url":"https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423","name":"https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423","tags":["x_refsource_MISC"]},{"url":"https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4","name":"https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4","tags":["x_refsource_MISC"]},{"url":"https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1","name":"https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-27T19:33:11.074Z"},"source":{"advisory":"GHSA-v6mg-96c6-gmpq","discovery":"UNKNOWN"}}}}}