{"id":"CVE-2026-101014","published":"2026-09-28T09:17:03.893","lastModified":"2026-09-28T15:15:33.930","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.","cvssScore":7.3,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cwes":["CWE-189","CWE-193"],"vendors":[],"products":[],"references":[{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/188","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/344","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-101014","tags":[]},{"url":"https://vuldb.com/submit/917100","tags":[]},{"url":"https://vuldb.com/vuln/410884","tags":[]},{"url":"https://vuldb.com/vuln/410884/cti","tags":[]},{"url":"https://weitongli.com/share/opendmarc-cleanup-off-by-one.html","tags":[]}],"exploitRefs":[{"url":"https://github.com/trusteddomainproject/OpenDMARC/commit/b3b1da9264bc80324094a27c71e7369bdedc62ae","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/188","tags":[]},{"url":"https://github.com/trusteddomainproject/OpenDMARC/pull/344","tags":[]}],"hasPoc":true,"ai":null}