{"id":"CVE-2025-9670","summary":"mixmark-io turndown commonmark-rules.js redos","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":"2026-08-12T03:51:30.286480205Z","published":"2025-08-29T19:02:08.787Z","database_specific":{"cwe_ids":["CWE-1333","CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9670.json","cna_assigner":"VulDB"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9670.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9670"},{"type":"ADVISORY","url":"https://vuldb.com/?id.321880"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.637911"},{"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mixmark-io/turndown","events":[{"introduced":"cc73387fb707e5fb5e1083e94078d08f38f3abc8"},{"last_affected":"0df0c0506233e0459ba21974f30b9ad3f1feb20f"}],"database_specific":{"extracted_events":[{"introduced":"7.2.0"},{"last_affected":"7.2.0"},{"introduced":"7.2.1"},{"last_affected":"7.2.1"}],"source":"AFFECTED_FIELD"}}],"versions":["7.2.0","7.2.1","v7.2.1","v7.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9670.json"}}],"schema_version":"1.9.0","severity":[{"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"}]}