{"id":"CVE-2026-115348","summary":"Mistune before 3.3.0 Quadratic-Time DoS via parse_link_text","details":"Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser's parse_link_text function that allows unauthenticated attackers to exhaust CPU with unbalanced brackets. Attackers can submit Markdown containing many unbalanced '[' or '![' characters, forcing repeated unbounded forward scans and tying up worker processes for minutes.","aliases":["GHSA-x2gr-6qf2-fc9x"],"modified":"2026-11-04T17:27:21.171390377Z","published":"2026-10-22T19:13:25.416Z","related":["openSUSE-SU-2026:12407-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115348.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-400"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115348.json"},{"type":"ADVISORY","url":"https://github.com/lepture/mistune/security/advisories/GHSA-x2gr-6qf2-fc9x"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115348"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-time-dos-via-parse-link-text"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/lepture/mistune","events":[{"introduced":"4222ee11c119fc8b308c6f8137f35a394e08065b"},{"fixed":"15c3b79325125272263d7d42492ec8f757447191"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"3.0.0"},{"fixed":"3.3.0"}]},{"range":[{"introduced":"3.0.0"},{"fixed":"3.3.0"}],"source":"DESCRIPTION"}]}}],"versions":["v3.2.1","v3.2.0","v3.1.4","v3.1.3","v3.1.2","v3.1.1","v3.1.0","v3.0.1","v3.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115348.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}