{"id":"CVE-2025-9670","aliases":["DEBIAN-CVE-2025-9670","EUVD-2025-28874","GHSA-6jxv-35jp-jr5v","UBUNTU-CVE-2025-9670"],"status":"published","title":"mixmark-io turndown commonmark-rules.js redos","description":"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.","severity":{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.005,"percentile":0.43174,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333","CWE-400"],"published":"2025-08-29T19:02:08Z","modified":"2026-10-28T02:30:38Z","fixes":[{"ecosystem":"Debian:14","package":"node-turndown","fixed_in":["7.2.2+~2.2.0~git20240406-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3","7.2.2+~2.2.0~git20240406-1","7.2.2+~2.2.0~git20240406-2","7.2.4+~2.2.0~git20240406-1"]},{"source":"osv","ecosystem":"Debian:13","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3","7.2.2+~2.2.0~git20240406-1","7.2.2+~2.2.0~git20240406-2","7.2.4+~2.2.0~git20240406-1"]},{"source":"osv","ecosystem":"Debian:14","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.2+~2.2.0~git20240406-1"}]}],"versions":["7.1.1-3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-1","7.1.1-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.2.2+~2.2.0~git20240406-2","7.2.4+~2.2.0~git20240406-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"node-turndown","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-3","7.2.2+~2.2.0~git20240406-2"]}],"products":[{"vendor":"mixmark-io","product":"turndown"}],"references":[{"url":"https://vuldb.com/?id.321880","tags":["vdb-entry","advisory","report"]},{"url":"https://vuldb.com/?ctiid.321880","tags":["signature","permissions-required","report"]},{"url":"https://vuldb.com/?submit.637911","tags":["third-party-advisory","advisory","report"]},{"url":"https://github.com/mixmark-io/turndown/issues/501","tags":["issue-tracking","report"]},{"url":"https://github.com/mixmark-io/turndown/issues/501#issue-3336342088","tags":["exploit","issue-tracking","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9670","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6jxv-35jp-jr5v"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9670.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-9670","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-9670","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-9670","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-9670","title":"mixmark-io turndown commonmark-rules.js redos","description":"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.","status":"published","published":"2025-08-29T19:02:08.787Z","modified":"2025-08-29T19:19:09.813Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-1333","CWE-400"],"updated_at":"2026-11-02T14:32:34.096798Z"}],"euvd":[{"id":"EUVD-2025-28874","description":"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.","status":"published","published":"2025-08-29T19:02:08Z","modified":"2025-08-29T19:19:09Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T20:31:49.168932Z"}],"ghsa":[{"id":"GHSA-6jxv-35jp-jr5v","title":"A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown...","description":"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.","status":"published","published":"2025-08-29T21:32:02Z","modified":"2025-08-29T21:32:09Z","cvss":[{"version":"4.0","score":5.5,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:03:27.857466Z"}],"nvd":[{"id":"CVE-2025-9670","description":"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.","status":"published","published":"2025-08-29T19:15:39.18Z","modified":"2026-10-18T21:10:00.12Z","cvss":[{"version":"4.0","score":5.5,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-400","CWE-1333"],"updated_at":"2026-11-02T14:11:26.200344Z"}],"osv":[{"id":"CVE-2025-9670","title":"mixmark-io turndown commonmark-rules.js redos","description":"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.","status":"published","published":"2025-08-29T19:02:08.787Z","modified":"2026-10-28T02:30:38.672202875Z","cvss":[{"version":"4.0","score":5.5,"vector":"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","level":"medium"}],"cwes":["CWE-1333","CWE-400"],"updated_at":"2026-11-02T15:44:53.490346Z"},{"id":"DEBIAN-CVE-2025-9670","description":"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. 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The exploit has been released to the public and may be exploited.","status":"published","published":"2025-08-29T19:15:00Z","modified":"2026-10-17T12:59:38.965015688Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"4.0","score":5.5,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T16:55:58.519486Z"}]}}