Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N L N N L N 2.1 .0013 2.4 —
AFFECTED Product Versions Fixed OpenDMARC 1.4.0 – —
TIMELINE Sep 28 Reserved by VulDB Sep 29 Published (CNA: VulDB) Oct 1 EXPLOIT PUBLISHED — CVE-2026-101278 (Trusted Domain Project OpenDMARC). Public exploit reference added.
A weakness has been identified in Trusted Domain Project OpenDMARC up to 1.4.2. This affects the function opendmarc_get_tld of the file libopendmarc/opendmarc_tld.c : of the component PSL Wildcard Handler. Executing a manipulation can lead to origin validation error. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
| Date | Event | Detail |
|---|---|---|
| September 28, 2026 | Reserved | Reserved by VulDB |
| September 29, 2026 | Published | Published (CNA: VulDB) |
| October 1, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-101278 (Trusted Domain Project OpenDMARC). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Trusted Domain Project | OpenDMARC | — | 1.4.0 | — |
Authoritative record: CVE-2026-101278 at cve.org
Vendors: trusted domain project
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-101278 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
