{"id":"CVE-2026-101280","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-101280","generatedAt":"2026-10-27T22:46:33.721Z","title":"A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2.","description":"A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","published":"2026-09-29T01:16:44.000Z","lastModified":"2026-09-29T18:57:24.000Z","status":"Deferred","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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/M"},"cwe":["CWE-287","CWE-290"],"affected":[],"epss":{"score":0.00403,"percentile":0.34304,"date":"2026-10-26","history":[{"date":"2026-09-29","score":0.00402,"percentile":0.31927}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T01:16:44.000Z","detail":{"score":"5.5","severity":"MEDIUM","publishedAt":"2026-09-29T01:16:44.193Z"},"summary":"New CVE, medium severity (CVSS 5.5)."}],"references":[{"url":"https://vuldb.com/cve/CVE-2026-101280","source":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/918282","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/411037","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/411037/cti","source":"cna@vuldb.com"},{"url":"https://xuyongzhe-vt.github.io/share/opendmarc-multi-record-downgrade.html","source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-101280","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}