{"id":"CVE-2026-16270","summary":"ReDoS in Open Mercato","details":"Open Mercato does not validate regex rules. An attacker with privileges to create the regex rule can add an unsafe regex to a field. When someone provide the proper string it can result in a DoS attack.\n\n\nThis issue was fixed in version 0.6.4.","modified":"2026-08-12T03:51:29.166397361Z","published":"2026-07-22T12:37:13.205Z","database_specific":{"cwe_ids":["CWE-1333"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16270.json","cna_assigner":"CERT-PL"},"references":[{"type":"WEB","url":"https://www.openmercato.com/"},{"type":"ADVISORY","url":"https://cert.pl/posts/2026/07/CVE-2026-16270"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16270.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16270"},{"type":"FIX","url":"https://github.com/open-mercato/open-mercato/pull/1996"},{"type":"PACKAGE","url":"https://github.com/open-mercato/open-mercato"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-mercato/open-mercato","events":[{"introduced":"0"},{"fixed":"2ddfb40794d0b968622c42a82edb94e45b642ea7"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.6.4"}],"source":"AFFECTED_FIELD"}}],"versions":["v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.0","v0.4.10","v0.4.9","v0.4.8","v0.4.7","v0.4.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16270.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}