CVE-2026-101280
highA vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2.
A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS
7.3
7.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L Severity source: NVD CVSS v3.1 (cna@vuldb.com)
Timeline (UTC)
Published: 2026-09-29 01:16
Modified: 2026-09-29 18:57
NVD status: Deferred
Last synced 2 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://vuldb.com/cve/CVE-2026-101280 cna@vuldb.com
- https://vuldb.com/submit/918282 cna@vuldb.com
- https://vuldb.com/vuln/411037 cna@vuldb.com
- https://vuldb.com/vuln/411037/cti cna@vuldb.com
- https://xuyongzhe-vt.github.io/share/opendmarc-multi-record-downgrade.html cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗