CVE-2026-101016

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{"bugzilla": {"description": "opendmarc: OpenDMARC: Improper policy enforcement via malformed DMARC record tags", "id": "2542375", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542375"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "status": "draft"}, "cwe": "CWE-1286", "details": ["A flaw was found in OpenDMARC. An improper error-handling issue in the policy parser allows a remote attacker to cause incorrect policy evaluation or a denial of service (DoS). By supplying a crafted Domain-based Message Authentication, Reporting, and Conformance (DMARC) record containing malformed policy tags, an attacker can trigger unhandled parsing conditions. This failure can cause intended email authentication policies to be dropped or improperly enforced during email verification."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2026-101016", "public_date": "2026-09-28T08:45:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-101016\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-101016\nhttps://vuldb.com/cve/CVE-2026-101016\nhttps://vuldb.com/submit/918242\nhttps://vuldb.com/vuln/410886\nhttps://vuldb.com/vuln/410886/cti\nhttps://xuyongzhe-vt.github.io/share/opendmarc-bad-tag-drops-policy.html"], "statement": "OpenDMARC is not shipped in any Red Hat product. It is available only in Fedora and EPEL community repositories.", "threat_severity": "Moderate"}

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