{"id":"CVE-2026-101014","title":"A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2","summary":"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. Perfor…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-189","CWE-193"],"vendor":"Trusted Domain Project","product":"OpenDMARC","affected":["OpenDMARC 1.4.0","OpenDMARC 1.4.1","OpenDMARC 1.4.2"],"published":"2026-09-28","updated":"2026-09-28","sourceUpdated":"2026-09-28T09:17:03.893","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101014","references":[{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae","label":"cna@vuldb.com"},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/188","label":"cna@vuldb.com"},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/344","label":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-101014","label":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/917100","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410884","label":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410884/cti","label":"cna@vuldb.com"},{"url":"https://weitongli.com/share/opendmarc-cleanup-off-by-one.html","label":"cna@vuldb.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-28T09:06:28.562Z","slug":"CVE-2026-101014","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}