{"id":"CVE-2026-101014","revision":null,"records":[{"revision":"b1feca4debe74e79b4fc1ca7b6258d9d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-101014","aliases":[],"title":"Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one","description":"A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.","state":0,"publishedAt":"2026-09-28T08:15:13.249+00:00","modifiedAt":"2026-09-28T12:43:21.47+00:00","affected":[{"ecosystem":"Vendor product","name":"OpenDMARC","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Trusted Domain Project\",\n                    \"product\": \"OpenDMARC\",\n                    \"versions\": [\n                        {\n                            \"version\": \"1.4.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"1.4.1\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"1.4.2\",\n                            \"status\": \"affected\"\n                        }\n                    ],\n                    \"cpes\": [\n                        \"cpe:2.3:a:trusted_domain_project:opendmarc:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"modules\": [\n                        \"DMARC Record Parser\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","score":7.3,"severity":"HIGH"},{"system":"CVSS 3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C","score":7.3,"severity":"HIGH"},{"system":"CVSS 2.0","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C","score":7.5,"severity":null}],"references":["https://vuldb.com/vuln/410884","https://vuldb.com/vuln/410884/cti","https://vuldb.com/cve/CVE-2026-101014","https://vuldb.com/submit/917100","https://github.com/trusteddomainproject/OpenDMARC/pull/188","https://github.com/trusteddomainproject/OpenDMARC/pull/344","https://weitongli.com/share/opendmarc-cleanup-off-by-one.html","https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101014","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-101014","identifiers":["CVE-2026-101014"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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