{"id":"CVE-2026-115348","published":"2026-10-22T19:17:40.430","lastModified":"2026-10-23T21:17:21.933","description":"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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-x2gr-6qf2-fc9x","tags":[]},{"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-time-dos-via-parse-link-text","tags":[]}],"exploitRefs":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-x2gr-6qf2-fc9x","tags":[]}],"hasPoc":true,"ai":null}