{"id":"EUVD-2026-111364","revision":null,"records":[{"revision":"d7bd6e9415174cfeb9d68e44c208ba39","observedAt":"2026-10-27T20:45:55.474+00:00","statement":{"source":"cve-program","id":"CVE-2026-116688","aliases":[],"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 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes incoming style attribute values. Crafted editor content can thereby cause unauthorized JavaScript execution in the browser. This issue is fixed in versions 47.7.4 and 48.5.1.","state":0,"publishedAt":"2026-10-27T19:36:28.906+00:00","modifiedAt":"2026-10-27T19:36:28.906+00:00","affected":[{"ecosystem":"Vendor product","name":"ckeditor5","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ckeditor\",\n                    \"product\": \"ckeditor5\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 45.0.0, < 47.7.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 48.0.0, < 48.5.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp","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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116688","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116688","identifiers":["CVE-2026-116688"]},"retained":false,"historicalAffected":[]},{"revision":"bc613ef4b44940949513770807f0d5cb","observedAt":"2026-10-30T02:00:19.765+00:00","statement":{"source":"euvd","id":"EUVD-2026-111364","aliases":["CVE-2026-116688","GHSA-rh54-vffm-5fvp"],"title":"CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes inc…","description":"CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes incoming style attribute values. Crafted editor content can thereby cause unauthorized JavaScript execution in the browser. This issue is fixed in versions 47.7.4 and 48.5.1.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":null}],"references":["https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp","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"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-111364","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 27, 2026, 7:36:28 PM","dateUpdated":"Oct 27, 2026, 7:36:28 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-111364","identifiers":["EUVD-2026-111364","CVE-2026-116688","GHSA-rh54-vffm-5fvp"]},"retained":false,"historicalAffected":[]},{"revision":"c2dcad57c97546a180846ecc40e34ae9","observedAt":"2026-10-29T21:50:49.331+00:00","statement":{"source":"nvd","id":"CVE-2026-116688","aliases":[],"title":"CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes inc…","description":"CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes incoming style attribute values. Crafted editor content can thereby cause unauthorized JavaScript execution in the browser. This issue is fixed in versions 47.7.4 and 48.5.1.","state":0,"publishedAt":"2026-10-27T20:17:14.037+00:00","modifiedAt":"2026-10-28T15:21:31.673+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["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","https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-116688","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-79"],"productCriteria":[],"sourceDates":{"published":"2026-10-27T20:17:14.037","lastModified":"2026-10-28T15:21:31.673"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-116688","identifiers":["CVE-2026-116688"]},"retained":false,"historicalAffected":[]},{"revision":"fcb280fa85c240a99fc7d737f6ddc7de","observedAt":"2026-10-27T21:46:44.857+00:00","statement":{"source":"osv","id":"GHSA-rh54-vffm-5fvp","aliases":["CVE-2026-116688"],"title":"CKEditor: Cross-site scripting (XSS) in the engine package","description":"### Impact\nA Cross-Site Scripting (XSS) vulnerability has been discovered in the CKEditor 5 engine. This vulnerability is caused by a prototype pollution issue in the `es-toolkit` library used in the CKEditor 5 codebase. This vulnerability could lead to unauthorized JavaScript code execution when the editor processes incoming `style` attribute values.\n\nThe underlying issue has been patched by the library maintainers, and the fix has been incorporated into CKEditor 5.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version `48.5.1` (and above) and `47.7.4` (LTS).\n\n### For more information\nEmail us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.","state":0,"publishedAt":"2026-10-27T21:05:06+00:00","modifiedAt":"2026-10-27T21:15:04.7968661+00:00","affected":[{"ecosystem":"npm","name":"ckeditor5","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"45.0.0"},{"kind":"fixed","version":"47.7.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"@ckeditor/ckeditor5-engine","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"45.0.0"},{"kind":"fixed","version":"47.7.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"ckeditor5","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"48.0.0"},{"kind":"fixed","version":"48.5.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"@ckeditor/ckeditor5-engine","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"48.0.0"},{"kind":"fixed","version":"48.5.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp","https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0","https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423","https://github.com/ckeditor/ckeditor5","https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4","https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1"],"sourceUrl":"https://github.com/advisories/GHSA-rh54-vffm-5fvp","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-rh54-vffm-5fvp","identifiers":["GHSA-rh54-vffm-5fvp","CVE-2026-116688"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-31T06:57:38.3088666+00:00","complete":true,"records":1766,"lastAttemptAt":"2026-10-31T06:57:38.3088666+00:00","lastSuccessAt":"2026-10-31T06:57:38.5290589+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:38.5291813+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-9266d7b009bf9c4a0ccdcb5cbdea7f905cb3c4d92fd3b41581ece16b2cfdc4e7-7018a7a91bdbe7a328c3977e056f4a7eac81e7fe5f6abb4ce52489f9898b901e","complete":true,"records":417507,"lastAttemptAt":"2026-10-31T06:57:37.7731294+00:00","lastSuccessAt":"2026-10-31T06:45:34.914523+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:37.7731294+00:00","snapshotPublishedAt":"2026-10-31T06:29:47+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-c5eb069e059248ab9c1b8cc754ce0885","complete":true,"records":13565,"lastAttemptAt":"2026-10-31T06:58:04.8764688+00:00","lastSuccessAt":"2026-10-31T03:47:38.206+00:00","error":null,"lastVerifiedAt":"2026-10-31T03:47:38.206+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13637,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-31T06:57:38.3088666+00:00","complete":true,"records":1094,"lastAttemptAt":"2026-10-31T06:57:38.3088666+00:00","lastSuccessAt":"2026-10-31T06:57:38.6628702+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:38.662871+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-4598b57cf00a4cd7b27f4e709d9a3cdd","complete":false,"records":13577,"lastAttemptAt":"2026-10-31T06:58:04.1602726+00:00","lastSuccessAt":"2026-10-31T06:58:04.156+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:58:04.156+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13547,"expectedIdentifiers":13637,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-21dcd6662970dfea02e4ea60ee637115e8d92664947484d2b9276b3f6568a84f","complete":true,"records":9815,"lastAttemptAt":"2026-10-31T06:57:38.1988123+00:00","lastSuccessAt":"2026-10-30T23:47:34.1817587+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:38.1988123+00:00","snapshotPublishedAt":"2026-10-30T23:33:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-2de9ccc5290f060c7aa63f89c25dd76f655a64ba1aba7c05c97fa3bee4f09899","complete":true,"records":1967,"lastAttemptAt":"2026-10-31T06:57:37.9918567+00:00","lastSuccessAt":"2026-10-28T20:55:34.2982937+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:37.9918567+00:00","snapshotPublishedAt":"2026-10-28T20:03:08+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f95f76cd406ae5bae3de632ad37fd2d5160b44f5e6b51748ac6f8f0c0c88e72b","complete":true,"records":3028,"lastAttemptAt":"2026-10-31T06:57:38.2123603+00:00","lastSuccessAt":"2026-10-30T23:47:38.4914494+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:38.2123603+00:00","snapshotPublishedAt":"2026-10-30T23:18:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-3ce2e3336768d0abd5b020f6f12bd5502a5deb02700e9d89d279597dce6e72ae","complete":true,"records":230992,"lastAttemptAt":"2026-10-31T06:57:38.0990122+00:00","lastSuccessAt":"2026-10-31T03:47:08.0119269+00:00","error":null,"lastVerifiedAt":"2026-10-31T06:57:38.0990122+00:00","snapshotPublishedAt":"2026-10-31T03:03:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}