{"id":"CVE-2026-100890","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-100890","generatedAt":"2026-10-28T00:59:52.004Z","title":"Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser.","description":"A flaw has been found in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_spf_ipv6_explode in the library libopendmarc/opendmarc_spf.c of the component SPF Parser. This manipulation of the argument cp causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","published":"2026-09-28T01:16:28.000Z","lastModified":"2026-09-28T15:15:34.000Z","status":"Awaiting Analysis","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: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/M"},"cwe":["CWE-404","CWE-476"],"affected":[],"epss":{"score":0.00373,"percentile":0.30985,"date":"2026-10-26","history":[{"date":"2026-09-28","score":0.00372,"percentile":0.28613}]},"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 (0.37%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-28T01:16:28.000Z","detail":{"score":"5.5","severity":"MEDIUM","publishedAt":"2026-09-28T01:16:28.047Z"},"summary":"New CVE, medium severity (CVSS 5.5)."}],"references":[{"url":"https://vuldb.com/cve/CVE-2026-100890","source":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/917188","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410840","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410840/cti","source":"cna@vuldb.com"},{"url":"https://weitongli.com/share/opendmarc-ip6-wild-pointer.html","source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100890","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."}