CVE-2021-21391

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-engine", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-engine", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-image", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj", "name": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-list", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-font", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget", "name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-widget", "tags": ["Product", "Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-400"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-21391", "ASSIGNER": "security-advisories@github.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}}, "publishedDate": "2021-04-29T01:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-engine:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-font:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-image:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-list:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-markdown-gfm:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-media-embed:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-paste-from-office:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}, {"cpe23Uri": "cpe:2.3:a:ckeditor:ckeditor5-widget:*:*:*:*:*:node.js:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "27.0.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-05-10T18:22Z"}