{"id":"CVE-2026-101014","summary":"Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one","details":"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.","modified":"2026-09-30T03:46:56.808335582Z","published":"2026-09-28T08:15:13.249Z","database_specific":{"cna_assigner":"VulDB","cwe_ids":["CWE-189","CWE-193"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101014.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101014.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101014"},{"type":"ADVISORY","url":"https://vuldb.com/cve/CVE-2026-101014"},{"type":"ADVISORY","url":"https://vuldb.com/submit/917100"},{"type":"ADVISORY","url":"https://vuldb.com/vuln/410884"},{"type":"REPORT","url":"https://vuldb.com/vuln/410884/cti"},{"type":"FIX","url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"},{"type":"FIX","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/188"},{"type":"FIX","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/344"},{"type":"EVIDENCE","url":"https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/trusteddomainproject/opendmarc","events":[{"introduced":"a29adab78ea9b6625066fdc482eae0ec6aa19ca6"},{"fixed":"b3b1da9264bc80324094a27c71e7369bdedc62ae"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"1.4.0"},{"last_affected":"1.4.0"},{"introduced":"1.4.1"},{"last_affected":"1.4.1"},{"introduced":"1.4.2"},{"last_affected":"1.4.2"}]}}],"versions":["1.4.0","1.4.1","1.4.2","rel-opendmarc-1-4-0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101014.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}