{"schemaVersion":3,"id":"CVE-2026-111766","aliases":["DEBIAN-CVE-2026-111766","GHSA-vfgh-jcmw-g37q","CGA-qmw2-3vp7-2ffv","CGA-fg2j-hp9x-6269","CGA-gqjw-jq3m-m67m","CGA-7p28-82wc-h4q4","CGA-22wg-gw46-3ppg","CGA-5r5h-x48x-gw5j","CGA-rqxj-49vx-jf82","CGA-v7j7-j22j-qwr3","CGA-2rrp-f394-hrr5","CGA-3g9p-6xrg-g2q7","CGA-3q9q-cm44-4vp8","CGA-8r3h-c932-m4vm","CGA-c69x-73jh-qm48","CGA-ch2g-qmw6-vrwx","CGA-h5p9-cmf4-634c","CGA-q232-6phq-7g72","CGA-q443-6fpq-8qhq","CGA-rww7-5prh-vq8q","CGA-v9pj-pm7f-p6vf","CGA-xhm2-f447-8x9w"],"status":"published","duplicateOf":null,"title":null,"description":"markdown-it is a Markdown parser. Prior to 14.3.3 and 15.0.3, when the html option or commonmark preset is enabled and the constructs occur inside a paragraph, attacker-controlled Markdown containing repeated unterminated inline HTML comments, processing instructions, declarations, or CDATA sections reaches src/rules_inline/html_inline.ts. Its HTML_TAG_RE match searches the remaining suffix for the appropriate terminator; when no terminator is present, parsing advances to the next opener and repeats the match over overlapping input, causing quadratic processing and denial of service through event-loop blocking or an unresponsive browser main thread. HTML blocks and the default HTML-disabled configuration are not affected by these payloads. This issue is fixed in versions 14.3.3 and 15.0.3.","dates":{"published":"2026-10-19T19:47:46.488Z","modified":"2026-10-19T19:47:46.488Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":3.7,"severity":"low","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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Resource Consumption","description":"The product does not properly control the allocation and maintenance of a limited resource.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/400.html"},{"id":"CWE-407","name":"Inefficient Algorithmic Complexity","description":"An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being 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