{"schema_version":1,"title":"The PHP League CommonMark vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 20 vulnerabilities in The PHP League CommonMark: 0 in the last 7 days and 19 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2024-58382, was published on 9 September 2026.","url":"https://junglewise.ai/threats/technologies/commonmark","json_url":"https://junglewise.ai/threats/technologies/commonmark.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/commonmark","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":16,"all_time":20,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":13,"last_90_days":19,"last_365_days":19},"latest":[{"cve":"CVE-2024-58382","cvss":7.5,"epss":0.0028,"slug":"cve-2024-58382-league-commonmark-polynomial-time-complexity-denial-of-service","title":"league/commonmark polynomial time complexity denial of service","severity":"high","exploited":false,"published_at":"2026-09-09T14:17:10.327+00:00","url":"https://junglewise.ai/threats/cve-2024-58382-league-commonmark-polynomial-time-complexity-denial-of-service"},{"cve":"CVE-2026-86435","cvss":7.5,"epss":0.0049,"slug":"cve-2026-86435-commonmark-footnote-extension-denial-of-service","title":"commonmark Footnote extension denial of service","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:43.013+00:00","url":"https://junglewise.ai/threats/cve-2026-86435-commonmark-footnote-extension-denial-of-service"},{"cve":"CVE-2026-86434","cvss":7.5,"epss":0.0051,"slug":"cve-2026-86434-league-commonmark-denial-of-service-via-slug-collision","title":"league/commonmark denial of service via slug collision","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.87+00:00","url":"https://junglewise.ai/threats/cve-2026-86434-league-commonmark-denial-of-service-via-slug-collision"},{"cve":"CVE-2026-86433","cvss":7.5,"epss":0.0051,"slug":"cve-2026-86433-commonmark-attributes-extension-denial-of-service-via-quadratic","title":"commonmark Attributes extension denial of service via quadratic parsing","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.733+00:00","url":"https://junglewise.ai/threats/cve-2026-86433-commonmark-attributes-extension-denial-of-service-via-quadratic"},{"cve":"CVE-2026-86432","cvss":5.3,"epss":0.0042,"slug":"cve-2026-86432-commonmark-xmlrenderer-denial-of-service-via-nested-xml","title":"commonmark XmlRenderer denial of service via nested XML indentation","severity":"medium","exploited":false,"published_at":"2026-09-07T13:20:42.6+00:00","url":"https://junglewise.ai/threats/cve-2026-86432-commonmark-xmlrenderer-denial-of-service-via-nested-xml"},{"cve":"CVE-2026-86431","cvss":7.2,"epss":0.0039,"slug":"cve-2026-86431-league-commonmark-attributesextension-xss-bypass-with-u-000c","title":"league/commonmark AttributesExtension XSS bypass with U+000C","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.46+00:00","url":"https://junglewise.ai/threats/cve-2026-86431-league-commonmark-attributesextension-xss-bypass-with-u-000c"},{"cve":"CVE-2026-86430","cvss":7.5,"epss":0.0049,"slug":"cve-2026-86430-league-commonmark-denial-of-service-in-parsing","title":"league/commonmark denial of service in parsing","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.32+00:00","url":"https://junglewise.ai/threats/cve-2026-86430-league-commonmark-denial-of-service-in-parsing"},{"cve":"CVE-2026-86429","cvss":7.5,"epss":0.0052,"slug":"cve-2026-86429-league-commonmark-quadratic-parsing-complexity-denial-of-service","title":"League CommonMark quadratic parsing complexity denial of service","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.18+00:00","url":"https://junglewise.ai/threats/cve-2026-86429-league-commonmark-quadratic-parsing-complexity-denial-of-service"},{"cve":"CVE-2026-86428","cvss":7.5,"epss":0.0049,"slug":"cve-2026-86428-commonmark-denial-of-service-in-attributesextension","title":"commonmark denial of service in AttributesExtension","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.037+00:00","url":"https://junglewise.ai/threats/cve-2026-86428-commonmark-denial-of-service-in-attributesextension"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-in-attributes-extension-932b44b3","title":"league/commonmark Denial of service in Attributes extension","severity":"high","exploited":false,"published_at":"2026-09-01T20:28:40+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-in-attributes-extension-932b44b3"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-in-smartpunct-and-attributes-252cde7d","title":"league/commonmark denial of service in SmartPunct and Attributes extensions","severity":"high","exploited":false,"published_at":"2026-09-01T20:21:45+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-in-smartpunct-and-attributes-252cde7d"},{"cvss":7.2,"slug":"league-commonmark-xss-via-form-feed-in-attributesextension-d61618f5","title":"League CommonMark XSS via form feed in AttributesExtension","severity":"high","exploited":false,"published_at":"2026-09-01T20:18:29+00:00","url":"https://junglewise.ai/threats/league-commonmark-xss-via-form-feed-in-attributesextension-d61618f5"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-via-parsing-algorithms-d1480161","title":"League CommonMark denial of service via parsing algorithms","severity":"high","exploited":false,"published_at":"2026-09-01T20:17:59+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-via-parsing-algorithms-d1480161"},{"cvss":5.3,"slug":"thephpleague-commonmark-denial-of-service-in-xmlrenderer-99533992","title":"thephpleague commonmark denial of service in XmlRenderer","severity":"medium","exploited":false,"published_at":"2026-08-06T20:42:54+00:00","url":"https://junglewise.ai/threats/thephpleague-commonmark-denial-of-service-in-xmlrenderer-99533992"},{"cvss":7.5,"slug":"thephpleague-commonmark-denial-of-service-in-uniqueslugnormalizer-94ab233b","title":"thephpleague commonmark denial of service in UniqueSlugNormalizer","severity":"high","exploited":false,"published_at":"2026-08-06T20:41:45+00:00","url":"https://junglewise.ai/threats/thephpleague-commonmark-denial-of-service-in-uniqueslugnormalizer-94ab233b"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-in-footnote-extension-90371ead","title":"league commonmark denial of service in Footnote extension","severity":"high","exploited":false,"published_at":"2026-08-06T20:40:53+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-in-footnote-extension-90371ead"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-in-attributesextension-c631ba68","title":"league/commonmark denial of service in AttributesExtension","severity":"high","exploited":false,"published_at":"2026-08-06T20:39:52+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-in-attributesextension-c631ba68"},{"cve":"CVE-2026-71488","cvss":7.5,"epss":0.0063,"slug":"cve-2026-71488-league-commonmark-quadratic-time-denial-of-service-in-markdown","title":"league commonmark quadratic-time denial of service in Markdown parsing","severity":"high","exploited":false,"published_at":"2026-08-06T20:37:20+00:00","url":"https://junglewise.ai/threats/cve-2026-71488-league-commonmark-quadratic-time-denial-of-service-in-markdown"},{"cve":"CVE-2026-71478","cvss":6.1,"epss":0.0036,"slug":"cve-2026-71478-thephpleague-commonmark-xss-bypass-in-attributesextension","title":"thephpleague commonmark XSS bypass in AttributesExtension","severity":"medium","exploited":false,"published_at":"2026-08-06T20:30:39+00:00","url":"https://junglewise.ai/threats/cve-2026-71478-thephpleague-commonmark-xss-bypass-in-attributesextension"},{"cve":"CVE-2025-46734","cvss":6.4,"epss":0.0036,"slug":"cve-2025-46734-league-commonmark-xss-in-attributes-extension","title":"league/commonmark XSS in Attributes extension","severity":"medium","exploited":false,"published_at":"2025-05-05T20:40:36+00:00","url":"https://junglewise.ai/threats/cve-2025-46734-league-commonmark-xss-in-attributes-extension"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":6},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":4},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":9},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"The PHP League CommonMark","slug":"commonmark","vendor":{"name":"The PHP League","slug":"the-php-league","url":"https://junglewise.ai/threats/vendors/the-php-league"},"aliases":[],"category":"library","homepage":"https://commonmark.thephpleague.com","repo_url":"https://github.com/thephpleague/commonmark","description":"A PHP Markdown parser library compliant with CommonMark and GitHub Flavored Markdown specifications.","url":"https://junglewise.ai/threats/technologies/commonmark"},"most_severe":[{"cve":"CVE-2026-71488","cvss":7.5,"epss":0.0063,"slug":"cve-2026-71488-league-commonmark-quadratic-time-denial-of-service-in-markdown","title":"league commonmark quadratic-time denial of service in Markdown parsing","severity":"high","exploited":false,"published_at":"2026-08-06T20:37:20+00:00","url":"https://junglewise.ai/threats/cve-2026-71488-league-commonmark-quadratic-time-denial-of-service-in-markdown"},{"cve":"CVE-2026-86429","cvss":7.5,"epss":0.0052,"slug":"cve-2026-86429-league-commonmark-quadratic-parsing-complexity-denial-of-service","title":"League CommonMark quadratic parsing complexity denial of service","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.18+00:00","url":"https://junglewise.ai/threats/cve-2026-86429-league-commonmark-quadratic-parsing-complexity-denial-of-service"},{"cve":"CVE-2026-86434","cvss":7.5,"epss":0.0051,"slug":"cve-2026-86434-league-commonmark-denial-of-service-via-slug-collision","title":"league/commonmark denial of service via slug collision","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.87+00:00","url":"https://junglewise.ai/threats/cve-2026-86434-league-commonmark-denial-of-service-via-slug-collision"},{"cve":"CVE-2026-86433","cvss":7.5,"epss":0.0051,"slug":"cve-2026-86433-commonmark-attributes-extension-denial-of-service-via-quadratic","title":"commonmark Attributes extension denial of service via quadratic parsing","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.733+00:00","url":"https://junglewise.ai/threats/cve-2026-86433-commonmark-attributes-extension-denial-of-service-via-quadratic"},{"cve":"CVE-2026-86435","cvss":7.5,"epss":0.0049,"slug":"cve-2026-86435-commonmark-footnote-extension-denial-of-service","title":"commonmark Footnote extension denial of service","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:43.013+00:00","url":"https://junglewise.ai/threats/cve-2026-86435-commonmark-footnote-extension-denial-of-service"},{"cve":"CVE-2026-86430","cvss":7.5,"epss":0.0049,"slug":"cve-2026-86430-league-commonmark-denial-of-service-in-parsing","title":"league/commonmark denial of service in parsing","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.32+00:00","url":"https://junglewise.ai/threats/cve-2026-86430-league-commonmark-denial-of-service-in-parsing"},{"cve":"CVE-2026-86428","cvss":7.5,"epss":0.0049,"slug":"cve-2026-86428-commonmark-denial-of-service-in-attributesextension","title":"commonmark denial of service in AttributesExtension","severity":"high","exploited":false,"published_at":"2026-09-07T13:20:42.037+00:00","url":"https://junglewise.ai/threats/cve-2026-86428-commonmark-denial-of-service-in-attributesextension"},{"cve":"CVE-2024-58382","cvss":7.5,"epss":0.0028,"slug":"cve-2024-58382-league-commonmark-polynomial-time-complexity-denial-of-service","title":"league/commonmark polynomial time complexity denial of service","severity":"high","exploited":false,"published_at":"2026-09-09T14:17:10.327+00:00","url":"https://junglewise.ai/threats/cve-2024-58382-league-commonmark-polynomial-time-complexity-denial-of-service"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-in-attributes-extension-932b44b3","title":"league/commonmark Denial of service in Attributes extension","severity":"high","exploited":false,"published_at":"2026-09-01T20:28:40+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-in-attributes-extension-932b44b3"},{"cvss":7.5,"slug":"league-commonmark-denial-of-service-in-smartpunct-and-attributes-252cde7d","title":"league/commonmark denial of service in SmartPunct and Attributes extensions","severity":"high","exploited":false,"published_at":"2026-09-01T20:21:45+00:00","url":"https://junglewise.ai/threats/league-commonmark-denial-of-service-in-smartpunct-and-attributes-252cde7d"}],"generated_at":"2026-09-26T18:07:00.158435+00:00"}