CVE-2021-21254

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The fix will be available in version 25.0.0."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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": "2021-01-29T21:55:13.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0"}, {"tags": ["x_refsource_MISC"], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm"}], "source": {"advisory": "GHSA-hgmg-hhc8-g5wr", "discovery": "UNKNOWN"}, "title": "Regular expression Denial of Service in Markdown plugin", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21254", "STATE": "PUBLIC", "TITLE": "Regular expression Denial of Service in Markdown plugin"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "ckeditor5", "version": {"version_data": [{"version_value": "< 25.0.0"}]}}]}, "vendor_name": "ckeditor"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "CKEditor 5 is an open source rich text editor framework with a modular architecture. The CKEditor 5 Markdown plugin (@ckeditor/ckeditor5-markdown-gfm) before version 25.0.0 has a regex denial of service (ReDoS) vulnerability. The vulnerability allowed to abuse link recognition regular expression, which could cause a significant performance drop resulting in browser tab freeze. It affects all users using CKEditor 5 Markdown plugin at version <= 24.0.0. The problem has been recognized and patched. The fix will be available in version 25.0.0."}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr", "refsource": "CONFIRM", "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr"}, {"name": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0", "refsource": "MISC", "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0"}, {"name": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm", "refsource": "MISC", "url": "https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm"}]}, "source": {"advisory": "GHSA-hgmg-hhc8-g5wr", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:09:14.916Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-hgmg-hhc8-g5wr"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v25.0.0"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21254", "datePublished": "2021-01-29T21:55:14.000Z", "dateReserved": "2020-12-22T00:00:00.000Z", "dateUpdated": "2024-08-03T18:09:14.916Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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