{"id":"CVE-2026-115352","published":"2026-10-22T19:17:41.077","lastModified":"2026-10-23T21:17:22.050","description":"Mistune before 3.3.0 contains an algorithmic complexity vulnerability in the inline link parser that allows unauthenticated attackers to exhaust CPU by submitting long runs of unmatched '[' characters. Attackers can send small markdown payloads that trigger O(N^2) parse_link_text and parse_link_label probing, occupying rendering workers for 30+ seconds per 16 KB input.","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-407"],"vendors":[],"products":[],"references":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-xrpv-r66x-8p7j","tags":[]},{"url":"https://www.vulncheck.com/advisories/mistune-before-3.3.0-quadratic-time-dos-via-unmatched-brackets-in-inline-parser","tags":[]}],"exploitRefs":[{"url":"https://github.com/lepture/mistune/security/advisories/GHSA-xrpv-r66x-8p7j","tags":[]}],"hasPoc":true,"ai":null}