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mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-34749.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-2022-34749.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2022-34749","reference_id":"","reference_type":"","scores":[{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66915","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66918","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66895","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66904","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66879","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66896","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66849","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66882","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66815","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.6684","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66813","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66862","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00521","scoring_system":"epss","scoring_elements":"0.66876","published_at":"2026-04-09T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-34749"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-34749","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-34749"},{"reference_url":"https://github.com/advisories/GHSA-fw3v-x4f2-v673","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-fw3v-x4f2-v673"},{"reference_url":"https://github.com/lepture/mistune","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/lepture/mistune"},{"reference_url":"https://github.com/lepture/mistune/commit/a6d43215132fe4f3d93f8d7e90ba83b16a0838b2","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/lepture/mistune/commit/a6d43215132fe4f3d93f8d7e90ba83b16a0838b2"},{"reference_url":"https://github.com/lepture/mistune/commit/ca1e7b506850f4e488823fc7338b49a8f9852718","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/lepture/mistune/commit/ca1e7b506850f4e488823fc7338b49a8f9852718"},{"reference_url":"https://github.com/lepture/mistune/issues/314#issuecomment-1223972386","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/lepture/mistune/issues/314#issuecomment-1223972386"},{"reference_url":"https://github.com/lepture/mistune/releases","reference_id":"","reference_type":"","scores":[{"value":"8.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/lepture/mistune/rel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