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.

CVE-2026-101014

CVE-2026-101014MEDIUM

Trusted Domain Project OpenDMARC DMARC Record opendmarc_util.c opendmarc_util_cleanup off-by-one

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   L   L   L    5.5   .0031   22.1     —

AFFECTED
  Product    Versions  Fixed
  OpenDMARC  1.4.0 –   —

TIMELINE
  Sep 27  Reserved by VulDB
  Sep 28  EXPLOIT PUBLISHED — CVE-2026-101014 (Trusted Domain Project OpenDMARC). Public exploit reference added.
  Sep 28  Published (CNA: VulDB)

CWE-189, CWE-193 · CNA: VulDB · CVSS v4.0 · 8 references · NVD status: Awaiting Analysis

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 27, 2026	Reserved	Reserved by VulDB
September 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-101014 (Trusted Domain Project OpenDMARC). Public exploit reference added.
September 28, 2026	Published	Published (CNA: VulDB)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Trusted Domain Project	OpenDMARC	—	1.4.0	—

Weaknesses

CWE-189 · CWE-193

References (8)

Authoritative record: CVE-2026-101014 at cve.org

Vendors: trusted domain project

Weaknesses: CWE-189 · CWE-193

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-101014 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.