{ "containers": { "cna": { "affected": [ { "product": "ckeditor5", "vendor": "ckeditor", "versions": [ { "status": "affected", "version": "< 27.0.0" } ] } ], "descriptions": [ { "lang": "en", "value": "CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-04-29T00:20:19", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-font" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-image" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-list" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office" }, { "tags": [ "x_refsource_MISC" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget" } ], "source": { "advisory": "GHSA-3rh3-wfr4-76mj", "discovery": "UNKNOWN" }, "title": "Regular expression Denial of Service in multiple packages", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21391", "STATE": "PUBLIC", "TITLE": "Regular expression Denial of Service in multiple packages" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "ckeditor5", "version": { "version_data": [ { "version_value": "< 27.0.0" } ] } } ] }, "vendor_name": "ckeditor" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0." } ] }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-400: Uncontrolled Resource Consumption" } ] } ] }, "references": { "reference_data": [ { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm" }, { "name": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj", "refsource": "CONFIRM", "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-engine", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-engine" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office" }, { "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget" } ] }, "source": { "advisory": "GHSA-3rh3-wfr4-76mj", "discovery": "UNKNOWN" } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:15.938Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm" }, { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-font" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-image" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-list" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget" } ] } ] }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21391", "datePublished": "2021-04-29T00:20:19", "dateReserved": "2020-12-22T00:00:00", "dateUpdated": "2024-08-03T18:09:15.938Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }