{"id":"CVE-2026-101014","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-101014","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…","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.","published":"2026-09-28T09:17:03.893","modified":"2026-09-28T09:17:03.893","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae","label":"trusteddomainproject/OpenDMARC@b3b1da9"},"references":[{"type":"WEB","url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae"},{"type":"WEB","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/188"},{"type":"WEB","url":"https://github.com/trusteddomainproject/OpenDMARC/pull/344"},{"type":"WEB","url":"https://vuldb.com/cve/CVE-2026-101014"},{"type":"WEB","url":"https://vuldb.com/submit/917100"},{"type":"WEB","url":"https://vuldb.com/vuln/410884"},{"type":"WEB","url":"https://vuldb.com/vuln/410884/cti"},{"type":"WEB","url":"https://weitongli.com/share/opendmarc-cleanup-off-by-one.html"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-28T09:17:03.893"}}