{"id":"CVE-2026-100889","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-100889","generatedAt":"2026-10-28T01:51:27.028Z","title":"A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0.","description":"A vulnerability was detected in Trusted Domain Project OpenDKIM up to 2.11.0. Affected is the function dkim_qp_decode of the file util.c of the component Decoder. The manipulation results in off-by-one. The attack may be performed from remote. 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":"2026-09-28T00:16:33.000Z","lastModified":"2026-09-28T15:16:05.000Z","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-189","CWE-193"],"affected":[],"epss":{"score":0.003,"percentile":0.22488,"date":"2026-10-26","history":[{"date":"2026-09-28","score":0.003,"percentile":0.20331}]},"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 (0.30%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-28T00:16:33.000Z","detail":{"score":"5.5","severity":"MEDIUM","publishedAt":"2026-09-28T00:16:32.647Z"},"summary":"New CVE, medium severity (CVSS 5.5)."}],"references":[{"url":"https://vuldb.com/cve/CVE-2026-100889","source":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/917063","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410839","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410839/cti","source":"cna@vuldb.com"},{"url":"https://weitongli.com/share/opendkim-qp-off-by-one.html","source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100889","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."}