{"id":"UBUNTU-CVE-2026-2327","details":"Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.","modified":"2026-03-19T10:38:43.018912Z","published":"2026-02-12T06:16:00Z","upstream":["CVE-2026-2327"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-2327"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-2327"},{"type":"REPORT","url":"https://gist.github.com/ltduc147/c9abecae1b291ede4f692f2ab988c917"},{"type":"REPORT","url":"https://github.com/markdown-it/markdown-it/blob/14.1.0/lib/rules_inline/linkify.mjs%23L33"},{"type":"REPORT","url":"https://github.com/markdown-it/markdown-it/commit/4b4bbcae5e0990a5b172378e507b33a59012ed26"},{"type":"REPORT","url":"https://security.snyk.io/vuln/SNYK-JS-MARKDOWNIT-10666750"}],"affected":[{"package":{"name":"node-markdown-it","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-markdown-it@10.0.0+dfsg-6?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.0.0+dfsg-2","10.0.0+dfsg-3","10.0.0+dfsg-3.1","10.0.0+dfsg-4","10.0.0+dfsg-5","10.0.0+dfsg-6"],"ecosystem_specific":{"binaries":[{"binary_version":"10.0.0+dfsg-6","binary_name":"node-markdown-it"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2327.json"}},{"package":{"name":"node-markdown-it","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-markdown-it@22.2.3+dfsg+~12.2.3-2?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["22.2.3+dfsg+~12.2.3-2"],"ecosystem_specific":{"binaries":[{"binary_version":"22.2.3+dfsg+~12.2.3-2","binary_name":"node-markdown-it"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2327.json"}},{"package":{"name":"node-markdown-it","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-markdown-it@22.2.3+dfsg+~12.2.3-2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["22.2.3+dfsg+~12.2.3-2"],"ecosystem_specific":{"binaries":[{"binary_version":"22.2.3+dfsg+~12.2.3-2","binary_name":"node-markdown-it"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-2327.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}]}