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In marked from and, there is a Regular expression Denial of Service vulnerability. This vulnerability can affect anyone who runs user generated code through marked. This vulnerability is fixed","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21306.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21306.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-21306","reference_id":"","reference_type":"","scores":[{"value":"0.00603","scoring_system":"epss","scoring_elements":"0.69967","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00603","scoring_system":"epss","scoring_elements":"0.69919","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00603","scoring_system":"epss","scoring_elements":"0.6996","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00603","scoring_system":"epss","scoring_elements":"0.69969","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00603","scoring_system":"epss","scoring_elements":"0.69956","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00603","scoring_system":"epss","scoring_elements":"0.69944","published_at":"2026-06-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-21306"},{"reference_url":"https://github.com/markedjs/marked/commit/7293251c438e3ee968970f7609f1a27f9007bccd","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/commit/7293251c438e3ee968970f7609f1a27f9007bccd"},{"reference_url":"https://github.com/markedjs/marked/issues/1927","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/issues/1927"},{"reference_url":"https://github.com/markedjs/marked/pull/1864","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/pull/1864"},{"reference_url":"https://github.com/markedjs/marked/security/advisories/GHSA-4r62-v4vq-hr96","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/security/advisories/GHSA-4r62-v4vq-hr96"},{"reference_url":"https://www.npmjs.com/package/marked","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.npmjs.com/package/marked"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1926866","reference_id":"1926866","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1926866"},{"reference_url":"https://security.archlinux.org/AVG-1548","reference_id":"AVG-1548","reference_type":"","scores":[{"value":"Medium","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-1548"},{"reference_url":"https://security.archlinux.org/AVG-1908","reference_id":"AVG-1908","reference_type":"","scores":[{"value":"Medium","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-1908"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21306","reference_id":"CVE-2021-21306","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21306"},{"reference_url":"https://github.com/advisories/GHSA-4r62-v4vq-hr96","reference_id":"GHSA-4r62-v4vq-hr96","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-4r62-v4vq-hr96"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/79729?format=json","purl":"pkg:npm/marked@2.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-awq5-34c9-tkes"},{"vulnerability":"VCID-xf3w-qz3m-h7fv"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/marked@2.0.0"}],"aliases":["CVE-2021-21306","GHSA-4r62-v4vq-hr96"],"risk_score":3.4,"exploitability":"0.5","weighted_severity":"6.8","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-e45t-7kvj-kugj"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/42080?format=json","vulnerability_id":"VCID-xf3w-qz3m-h7fv","summary":"Inefficient Regular Expression Complexity\nThe regular expression `block.def` may cause catastrophic backtracking against some strings and lead to a regular expression denial of service (ReDoS). Anyone who runs untrusted markdown through a vulnerable version of marked and does not use a worker with a time limit may be affected. This issue is patched As a workaround, avoid running untrusted markdown through marked or run marked on a worker thread and set a reasonable time limit to prevent draining resources.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-21680.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-21680.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2022-21680","reference_id":"","reference_type":"","scores":[{"value":"0.00708","scoring_system":"epss","scoring_elements":"0.72602","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00708","scoring_system":"epss","scoring_elements":"0.72578","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00708","scoring_system":"epss","scoring_elements":"0.72592","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00708","scoring_system":"epss","scoring_elements":"0.7261","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00708","scoring_system":"epss","scoring_elements":"0.72603","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00708","scoring_system":"epss","scoring_elements":"0.72563","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-21680"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21680","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21680"},{"reference_url":"https://github.com/markedjs/marked","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked"},{"reference_url":"https://github.com/markedjs/marked/commit/c4a3ccd344b6929afa8a1d50ac54a721e57012c0","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/commit/c4a3ccd344b6929afa8a1d50ac54a721e57012c0"},{"reference_url":"https://github.com/markedjs/marked/releases/tag/v4.0.10","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/releases/tag/v4.0.10"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AIXDMC3CSHYW3YWVSQOXAWLUYQHAO5UX","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AIXDMC3CSHYW3YWVSQOXAWLUYQHAO5UX"},{"reference_url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AIXDMC3CSHYW3YWVSQOXAWLUYQHAO5UX/","reference_id":"","reference_type":"","scores":[],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AIXDMC3CSHYW3YWVSQOXAWLUYQHAO5UX/"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2082705","reference_id":"2082705","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2082705"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21680","reference_id":"CVE-2022-21680","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21680"},{"reference_url":"https://github.com/advisories/GHSA-rrrm-qjm4-v8hf","reference_id":"GHSA-rrrm-qjm4-v8hf","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-rrrm-qjm4-v8hf"},{"reference_url":"https://github.com/markedjs/marked/security/advisories/GHSA-rrrm-qjm4-v8hf","reference_id":"GHSA-rrrm-qjm4-v8hf","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/markedjs/marked/security/advisories/GHSA-rrrm-qjm4-v8hf"},{"reference_url":"https://access.redhat.com/errata/RHSA-2023:3642","reference_id":"RHSA-2023:3642","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2023:3642"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/60177?format=json"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