{"id":"UBUNTU-CVE-2025-9670","details":"A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown function of the file src/commonmark-rules.js. Performing manipulation results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be exploited.","modified":"2026-01-20T19:17:22.270519Z","published":"2025-08-29T19:15:00Z","upstream":["CVE-2025-9670"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-9670"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-9670"},{"type":"REPORT","url":"https://github.com/mixmark-io/turndown/issues/501"},{"type":"REPORT","url":"https://github.com/mixmark-io/turndown/issues/501#issue-3336342088"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.321880"},{"type":"REPORT","url":"https://vuldb.com/?id.321880"},{"type":"REPORT","url":"https://vuldb.com/?submit.637911"}],"affected":[{"package":{"name":"node-turndown","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-turndown@7.1.1-2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-1","7.1.1-2"],"ecosystem_specific":{"binaries":[{"binary_version":"7.1.1-2","binary_name":"node-turndown"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9670.json"}},{"package":{"name":"node-turndown","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-turndown@7.1.1-3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3"],"ecosystem_specific":{"binaries":[{"binary_version":"7.1.1-3","binary_name":"node-turndown"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9670.json"}},{"package":{"name":"node-turndown","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-turndown@7.1.1-3?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3"],"ecosystem_specific":{"binaries":[{"binary_version":"7.1.1-3","binary_name":"node-turndown"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9670.json"}}],"schema_version":"1.7.3","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_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"}]}